The photoelectric effect is a phenomenon that has led to many important scientific discoveries. Light of a particular wavelength is shined onto a piece of metal, showering the metal with photons. Wavelength is inversely related to a photons energy. That is, with a smaller wavelength, the photon has greater energy. The wavelength of the light is decreased until a detector next to the metal senses that electrons are being ejected from the metal. This sensor also tells us how many electrons are ejected per second, which we call electrical current. At this point, any additional decrease in wavelength does not affect the number of electrons ejected. This point is called the metals work function. However, if we then begin to increase the intensity of the light being shone (meaning the amount of light as opposed to the lights wavelength), the number of electrons picked up by the sensor increases.Q. According to the information in the passage, what can we infer would happen if the intensity of the light were decreased immediately after reaching the work function?a)The current would remain and increase.b)The current would remain unchanged.c)More information is necessary.d)The current would remain, but would decrease.Correct answer is option 'D'. Can you explain this answer?

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The photoelectric effect is a phenomenon that has led to many important scientific discoveries. Light of a particular wavelength is shined onto a piece of metal, showering the metal with photons. Wavelength is inversely related to a photon's energy. That is, with a smaller wavelength, the photon has greater energy. The wavelength of the light is decreased until a detector next to the metal senses that electrons are being ejected from the metal. This sensor also tells us how many electrons are ejected per second, which we call electrical current. At this point, any additional decrease in wavelength does not affect the number of electrons ejected. This point is called the metal's work function. However, if we then begin to increase the intensity of the light being shone (meaning the amount of light as opposed to the light's wavelength), the number of electrons picked up by the sensor increases.

Q. According to the information in the passage, what can we infer would happen if the intensity of the light were decreased immediately after reaching the work function?

a)
The current would remain and increase.
b)
The current would remain unchanged.
c)
More information is necessary.
d)
The current would remain, but would decrease.

Correct answer is option 'D'. Can you explain this answer?

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The photoelectric effect is a phenomenon that has led to many importan...

The correct answer is that the current would remain, but it would decrease. At the end of the passage, we are told that intensity of the light affects the current in a direct relationship. That is, more intensity means greater current. Therefore, as we have seen that the presence of a current is related to the wavelength of the light used, we know that the current would remain. Furthermore, as we have decreased the intensity, we know that this current would simply decrease.

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The photoelectric effect is a phenomenon that has led to many important scientific discoveries. Light of a particular wavelength is shined onto a piece of metal, showering the metal with photons. Wavelength is inversely related to a photons energy. That is, with a smaller wavelength, the photon has greater energy. The wavelength of the light is decreased until a detector next to the metal senses that electrons are being ejected from the metal. This sensor also tells us how many electrons are ejected per second, which we call electrical current. At this point, any additional decrease in wavelength does not affect the number of electrons ejected. This point is called the metals work function. However, if we then begin to increase the intensity of the light being shone (meaning the amount of light as opposed to the lights wavelength), the number of electrons picked up by the sensor increases.Q. Based on the information in the passage, the term "work function" can be most accurately described as which of the following?

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The photoelectric effect is a phenomenon that has led to many important scientific discoveries. Light of a particular wavelength is shined onto a piece of metal, showering the metal with photons. Wavelength is inversely related to a photons energy. That is, with a smaller wavelength, the photon has greater energy. The wavelength of the light is decreased until a detector next to the metal senses that electrons are being ejected from the metal. This sensor also tells us how many electrons are ejected per second, which we call electrical current. At this point, any additional decrease in wavelength does not affect the number of electrons ejected. This point is called the metals work function. However, if we then begin to increase the intensity of the light being shone (meaning the amount of light as opposed to the lights wavelength), the number of electrons picked up by the sensor increases.Q. Light intensity can best be described as which of the following?

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Directions:Read the passages and choose the best answer to each question.PassageNATURAL SCIENCE: El Nino: A Meteorological EnigmaAlmost any mention of climate change bringsthoughts of global warming, complete with mentalimages of rising seas and melting ice caps. Whilefew reputable scientists contest the reality of global(5) warming, most climatologists are also aware of otherpowerful meteorological phenomena that shape theweather on a daily, seasonal, or even multi-year basis.In fact, these “background oscillations,” or fluctua-tions, appear to cause major climate shifts every few(10) decades. Among the most influential are the NorthPacific Oscillation (NPO), the North Atlantic Oscil-lation (NAO), the Pacific Decadal Oscillation (PDO),and the El Nino-Southern Oscillation (ENSO). Ofthese, probably the best-known is the El Nino-Southern(15) Oscillation, popularly called “El Nino.”The term El Nino was first reported in scien-tific circles in 1892. It originally referred to a localevent: an annual, weak, warm ocean current thatfishermen discovered along the central western coast(20) of South America. The current was most noticeablearound Christmastime, which led to its name becauseEl Nino is Spanish for “little boy” and is frequentlyused when referring to the Christ Child. (The reversephenomenon, a cold ocean current, is known by a(25) corresponding term, La Nina, Spanish for “little girl.”)Along this area of South America, El Ninos reducethe upwelling of cold, nutrient-rich water that sustainslarge fish populations. Predators such as larger fish andsea birds depend on these populations for survival, as(30) do local fisheries.As climatology developed as a discipline, scien-tists discovered that both trends in the current werepart of a larger phenomenon affecting global climatepatterns, the Southern Oscillation. The definition of(35) El Nino has therefore expanded and continues tochange as climate researchers compile more data. Nowscientists say that during El Ninos, sea-surface tem-peratures over a large part of the central Pacific climbabove normal and stay high for many months. This(40) creates a large pool of warm water that coincides witha change in wind patterns. The shift in wind patternschanges where evaporation takes place. Together, thewarm water and shifting wind affect where storms formand where rainfall occurs on a global level.(45) Most of the time, strong El Ninos bring wetwinters to the Southwestern United States and milderwinters to the Midwest. They tend to bring dry condi-tions to Indonesia and northern Australia. They gener-ally occur every two to seven years. La Ninas usually,(50) but not always, follow El Ninos. During La Ninas,water temperatures in the Central Pacific drop belownormal, and weather patterns shift in the other direc-tion. Together, the El Nino and La Nina cyclescomplete the El Nino-Southern Oscillation (ENSO).(55) ENSO weather oscillations are discrete from theNPO, NAO, and PDO weather patterns. This meansone oscillation does not cause or usually influence theothers. Sometimes, however, the various oscillations“beat” together at the same frequency, causing the(60) fluctuations to be synchronized. When this happens,scientists say the resulting weather can be intensified.Weather effects can be damaging. The warmingpatterns of El Nino are one of the leading causesof natural damage to coral reefs, while wider ENSO(65) fluctuations may cause flooding or drought to occuron land. In these cases, extreme shifts can cause eco-nomic pressure by disrupting entire fishing industries ordamaging crops.Sometimes, pressure caused by intense weather(70) can have unexpected political effects. Some scientistsargue that unusually cold weather brought by a strongEl Nino phenomenon caused significant crop damagein 1788-89, which many say contributed to the FrenchRevolution. Other climate researchers claim that strong(75) oscillation coupling, combined with strong El Ninosin the late 1930s and early 1940s, led to a profoundcold snap in Northern Europe in the middle of theSecond World War. The scientists argue that this unex-pected cold snap significantly contributed to the failure(80) of Germany to capture Moscow, which changed thecourse of World War II.ENSO phenomena, along with the other threeoscillations, are separate from those attributed to globalwarming. The causes are completely independent.(85) However, because El Nino and global warming bothcan result in strong temperature variability, disruptiverain distribution, and extreme damage to a variety ofecosystems, any synchronicity will be closely observedby scientists seeking to document the total effects(90) of each.Q.The author uses the information in parentheses in lines 23–25 primarily to

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Directions: Read the passages and choose the best answer to each question.PassageThe photoelectric effect is the emission of electrons from matter upon the absorption of electromagnetic radiation, such as ultraviolet radiation or X-rays. Electromagnetic radiation is made up of photons, which can be considered ﬁnite packets of energy at various levels. Photons have properties attributed to both particles and waves. This phenomenon is known as the wave-particle duality.The photoelectric effect is especially noticeable when dealing with metals. When a metallic surface is exposed to electromagnetic radiation that is above the minimum energy threshold (which is speciﬁc to the type of surface and material), photons are absorbed and electrons are emitted. No electrons are emitted for radiation with energy frequencies below that of the threshold, as the electrons are unable to gain sufﬁcient energy to overcome the attractive forces within the metal. A scientist wishing to measure the photoelectric effect so as to further understand the nature of photons conducted the following experiments.Experiment 1Wishing to measure the energy required to produce the photoelectric effect on a surface of a sheet of copper, the scientist directed a beam of radiation at different frequencies (energies)—measured in Hertz (Hz)—onto the surface.After 5 minutes, the charge—measured in volts (V)—of the sheet of metal was recorded. This was done because if electrons were emitted from the surface, the metal would take on a positive charge. The results were recorded in Table 1.Experiment 2Solar cells used to generate electricity are based on the concept of the photoelectric effect; however, the goal of the cell is to capture the emitted electron and create an electric current. The scientist measured the effects of different frequencies (in Hz) of radiation on the current (in V) generated by a certain solar cell. The results were recorded in Table 2.Q.A scientist predicts that in years to come the earth’s atmosphere will become much less effective at shielding the surface from radiation of higher frequencies. If this prediction is correct, which of the following is most likely to happen based on results of the experiments?

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Directions: Read the passages and choose the best answer to each question.PassageThe photoelectric effect is the emission of electrons from matter upon the absorption of electromagnetic radiation, such as ultraviolet radiation or X-rays. Electromagnetic radiation is made up of photons, which can be considered ﬁnite packets of energy at various levels. Photons have properties attributed to both particles and waves. This phenomenon is known as the wave-particle duality.The photoelectric effect is especially noticeable when dealing with metals. When a metallic surface is exposed to electromagnetic radiation that is above the minimum energy threshold (which is speciﬁc to the type of surface and material), photons are absorbed and electrons are emitted. No electrons are emitted for radiation with energy frequencies below that of the threshold, as the electrons are unable to gain sufﬁcient energy to overcome the attractive forces within the metal. A scientist wishing to measure the photoelectric effect so as to further understand the nature of photons conducted the following experiments.Experiment 1Wishing to measure the energy required to produce the photoelectric effect on a surface of a sheet of copper, the scientist directed a beam of radiation at different frequencies (energies)—measured in Hertz (Hz)—onto the surface.After 5 minutes, the charge—measured in volts (V)—of the sheet of metal was recorded. This was done because if electrons were emitted from the surface, the metal would take on a positive charge. The results were recorded in Table 1.Experiment 2Solar cells used to generate electricity are based on the concept of the photoelectric effect; however, the goal of the cell is to capture the emitted electron and create an electric current. The scientist measured the effects of different frequencies (in Hz) of radiation on the current (in V) generated by a certain solar cell. The results were recorded in Table 2.Q.Do the results of the experiments help to explain the nature of photons as ﬁnite packets of energy at various levels?

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The photoelectric effect is a phenomenon that has led to many important scientific discoveries. Light of a particular wavelength is shined onto a piece of metal, showering the metal with photons. Wavelength is inversely related to a photons energy. That is, with a smaller wavelength, the photon has greater energy. The wavelength of the light is decreased until a detector next to the metal senses that electrons are being ejected from the metal. This sensor also tells us how many electrons are ejected per second, which we call electrical current. At this point, any additional decrease in wavelength does not affect the number of electrons ejected. This point is called the metals work function. However, if we then begin to increase the intensity of the light being shone (meaning the amount of light as opposed to the lights wavelength), the number of electrons picked up by the sensor increases.Q. According to the information in the passage, what can we infer would happen if the intensity of the light were decreased immediately after reaching the work function?a)The current would remain and increase.b)The current would remain unchanged.c)More information is necessary.d)The current would remain, but would decrease.Correct answer is option 'D'. Can you explain this answer?

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The photoelectric effect is a phenomenon that has led to many important scientific discoveries. Light of a particular wavelength is shined onto a piece of metal, showering the metal with photons. Wavelength is inversely related to a photons energy. That is, with a smaller wavelength, the photon has greater energy. The wavelength of the light is decreased until a detector next to the metal senses that electrons are being ejected from the metal. This sensor also tells us how many electrons are ejected per second, which we call electrical current. At this point, any additional decrease in wavelength does not affect the number of electrons ejected. This point is called the metals work function. However, if we then begin to increase the intensity of the light being shone (meaning the amount of light as opposed to the lights wavelength), the number of electrons picked up by the sensor increases.Q. According to the information in the passage, what can we infer would happen if the intensity of the light were decreased immediately after reaching the work function?a)The current would remain and increase.b)The current would remain unchanged.c)More information is necessary.d)The current would remain, but would decrease.Correct answer is option 'D'. Can you explain this answer? for ACT 2025 is part of ACT preparation. The Question and answers have been prepared according to the ACT exam syllabus. Information about The photoelectric effect is a phenomenon that has led to many important scientific discoveries. Light of a particular wavelength is shined onto a piece of metal, showering the metal with photons. Wavelength is inversely related to a photons energy. That is, with a smaller wavelength, the photon has greater energy. The wavelength of the light is decreased until a detector next to the metal senses that electrons are being ejected from the metal. This sensor also tells us how many electrons are ejected per second, which we call electrical current. At this point, any additional decrease in wavelength does not affect the number of electrons ejected. This point is called the metals work function. However, if we then begin to increase the intensity of the light being shone (meaning the amount of light as opposed to the lights wavelength), the number of electrons picked up by the sensor increases.Q. According to the information in the passage, what can we infer would happen if the intensity of the light were decreased immediately after reaching the work function?a)The current would remain and increase.b)The current would remain unchanged.c)More information is necessary.d)The current would remain, but would decrease.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for ACT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The photoelectric effect is a phenomenon that has led to many important scientific discoveries. Light of a particular wavelength is shined onto a piece of metal, showering the metal with photons. Wavelength is inversely related to a photons energy. That is, with a smaller wavelength, the photon has greater energy. The wavelength of the light is decreased until a detector next to the metal senses that electrons are being ejected from the metal. This sensor also tells us how many electrons are ejected per second, which we call electrical current. At this point, any additional decrease in wavelength does not affect the number of electrons ejected. This point is called the metals work function. However, if we then begin to increase the intensity of the light being shone (meaning the amount of light as opposed to the lights wavelength), the number of electrons picked up by the sensor increases.Q. According to the information in the passage, what can we infer would happen if the intensity of the light were decreased immediately after reaching the work function?a)The current would remain and increase.b)The current would remain unchanged.c)More information is necessary.d)The current would remain, but would decrease.Correct answer is option 'D'. Can you explain this answer?.

Solutions for The photoelectric effect is a phenomenon that has led to many important scientific discoveries. Light of a particular wavelength is shined onto a piece of metal, showering the metal with photons. Wavelength is inversely related to a photons energy. That is, with a smaller wavelength, the photon has greater energy. The wavelength of the light is decreased until a detector next to the metal senses that electrons are being ejected from the metal. This sensor also tells us how many electrons are ejected per second, which we call electrical current. At this point, any additional decrease in wavelength does not affect the number of electrons ejected. This point is called the metals work function. However, if we then begin to increase the intensity of the light being shone (meaning the amount of light as opposed to the lights wavelength), the number of electrons picked up by the sensor increases.Q. According to the information in the passage, what can we infer would happen if the intensity of the light were decreased immediately after reaching the work function?a)The current would remain and increase.b)The current would remain unchanged.c)More information is necessary.d)The current would remain, but would decrease.Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for ACT. Download more important topics, notes, lectures and mock test series for ACT Exam by signing up for free.

Here you can find the meaning of The photoelectric effect is a phenomenon that has led to many important scientific discoveries. Light of a particular wavelength is shined onto a piece of metal, showering the metal with photons. Wavelength is inversely related to a photons energy. That is, with a smaller wavelength, the photon has greater energy. The wavelength of the light is decreased until a detector next to the metal senses that electrons are being ejected from the metal. This sensor also tells us how many electrons are ejected per second, which we call electrical current. At this point, any additional decrease in wavelength does not affect the number of electrons ejected. This point is called the metals work function. However, if we then begin to increase the intensity of the light being shone (meaning the amount of light as opposed to the lights wavelength), the number of electrons picked up by the sensor increases.Q. According to the information in the passage, what can we infer would happen if the intensity of the light were decreased immediately after reaching the work function?a)The current would remain and increase.b)The current would remain unchanged.c)More information is necessary.d)The current would remain, but would decrease.Correct answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of The photoelectric effect is a phenomenon that has led to many important scientific discoveries. Light of a particular wavelength is shined onto a piece of metal, showering the metal with photons. Wavelength is inversely related to a photons energy. That is, with a smaller wavelength, the photon has greater energy. The wavelength of the light is decreased until a detector next to the metal senses that electrons are being ejected from the metal. This sensor also tells us how many electrons are ejected per second, which we call electrical current. At this point, any additional decrease in wavelength does not affect the number of electrons ejected. This point is called the metals work function. However, if we then begin to increase the intensity of the light being shone (meaning the amount of light as opposed to the lights wavelength), the number of electrons picked up by the sensor increases.Q. According to the information in the passage, what can we infer would happen if the intensity of the light were decreased immediately after reaching the work function?a)The current would remain and increase.b)The current would remain unchanged.c)More information is necessary.d)The current would remain, but would decrease.Correct answer is option 'D'. Can you explain this answer?, a detailed solution for The photoelectric effect is a phenomenon that has led to many important scientific discoveries. Light of a particular wavelength is shined onto a piece of metal, showering the metal with photons. Wavelength is inversely related to a photons energy. That is, with a smaller wavelength, the photon has greater energy. The wavelength of the light is decreased until a detector next to the metal senses that electrons are being ejected from the metal. This sensor also tells us how many electrons are ejected per second, which we call electrical current. At this point, any additional decrease in wavelength does not affect the number of electrons ejected. This point is called the metals work function. However, if we then begin to increase the intensity of the light being shone (meaning the amount of light as opposed to the lights wavelength), the number of electrons picked up by the sensor increases.Q. According to the information in the passage, what can we infer would happen if the intensity of the light were decreased immediately after reaching the work function?a)The current would remain and increase.b)The current would remain unchanged.c)More information is necessary.d)The current would remain, but would decrease.Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of The photoelectric effect is a phenomenon that has led to many important scientific discoveries. Light of a particular wavelength is shined onto a piece of metal, showering the metal with photons. Wavelength is inversely related to a photons energy. That is, with a smaller wavelength, the photon has greater energy. The wavelength of the light is decreased until a detector next to the metal senses that electrons are being ejected from the metal. This sensor also tells us how many electrons are ejected per second, which we call electrical current. At this point, any additional decrease in wavelength does not affect the number of electrons ejected. This point is called the metals work function. However, if we then begin to increase the intensity of the light being shone (meaning the amount of light as opposed to the lights wavelength), the number of electrons picked up by the sensor increases.Q. According to the information in the passage, what can we infer would happen if the intensity of the light were decreased immediately after reaching the work function?a)The current would remain and increase.b)The current would remain unchanged.c)More information is necessary.d)The current would remain, but would decrease.Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice The photoelectric effect is a phenomenon that has led to many important scientific discoveries. Light of a particular wavelength is shined onto a piece of metal, showering the metal with photons. Wavelength is inversely related to a photons energy. That is, with a smaller wavelength, the photon has greater energy. The wavelength of the light is decreased until a detector next to the metal senses that electrons are being ejected from the metal. This sensor also tells us how many electrons are ejected per second, which we call electrical current. At this point, any additional decrease in wavelength does not affect the number of electrons ejected. This point is called the metals work function. However, if we then begin to increase the intensity of the light being shone (meaning the amount of light as opposed to the lights wavelength), the number of electrons picked up by the sensor increases.Q. According to the information in the passage, what can we infer would happen if the intensity of the light were decreased immediately after reaching the work function?a)The current would remain and increase.b)The current would remain unchanged.c)More information is necessary.d)The current would remain, but would decrease.Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice ACT tests.

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