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The threshold energy of a metal is 10 eV. Identify the incorrect option. (E = energy of one photon) (1) If E = 12 eV, photoelectric effect occurs (2) If E = 15 eV, kinetic energy of electron is more than option (1) (3) If intensity of photon increases but energy remain same, then kinetic energy of photoelectron remains same. (4) If intensity of photon increase but energy remain same, then kinetic energy of photoelectron increase.?
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The threshold energy of a metal is 10 eV. Identify the incorrect optio...
Threshold Energy of a Metal:
The threshold energy of a metal refers to the minimum energy required to free an electron from the surface of the metal. When the energy of a photon is greater than or equal to the threshold energy, the photoelectric effect occurs.
Incorrect Option Identification:
Let's analyze each option to identify the incorrect one.
Option 1: If E = 12 eV, photoelectric effect occurs
In this option, the energy of the photon (E) is 12 eV, which is greater than the threshold energy of the metal (10 eV). Therefore, the photoelectric effect will indeed occur. This option is correct.
Option 2: If E = 15 eV, kinetic energy of electron is more than option (1)
When a photon with energy greater than the threshold energy is incident on a metal surface, the excess energy is transferred to the photoelectron as kinetic energy. In this option, the energy of the photon (E) is 15 eV, which is greater than the threshold energy of the metal (10 eV). Therefore, the kinetic energy of the photoelectron will be greater than in option (1). This option is correct.
Option 3: If intensity of photon increases but energy remains the same, then kinetic energy of photoelectron remains the same.
The intensity of light refers to the number of photons incident per unit area per unit time. It does not affect the energy of individual photons. Therefore, if the intensity of photons increases while the energy of each photon remains the same, the total number of photons incident on the metal surface increases. However, the energy of each individual photon remains unchanged.
Since the energy of each photon remains the same, the kinetic energy transferred to each photoelectron will also remain the same. Therefore, this option is correct.
Option 4: If intensity of photon increases but energy remains the same, then kinetic energy of photoelectron increases.
This option is incorrect. As mentioned earlier, the energy of each photon remains the same even if the intensity increases. Therefore, the kinetic energy transferred to each photoelectron will not increase. The total number of photoelectrons emitted may increase due to the increased intensity, but the kinetic energy of each individual photoelectron will remain constant.
Conclusion:
The incorrect option is Option 4. If the intensity of photons increases while the energy of each photon remains the same, the kinetic energy of the photoelectron will not increase. The energy of each individual photon determines the kinetic energy transferred to the photoelectrons.
The threshold energy of a metal refers to the minimum energy required to free an electron from the surface of the metal. When the energy of a photon is greater than or equal to the threshold energy, the photoelectric effect occurs.
Incorrect Option Identification:
Let's analyze each option to identify the incorrect one.
Option 1: If E = 12 eV, photoelectric effect occurs
In this option, the energy of the photon (E) is 12 eV, which is greater than the threshold energy of the metal (10 eV). Therefore, the photoelectric effect will indeed occur. This option is correct.
Option 2: If E = 15 eV, kinetic energy of electron is more than option (1)
When a photon with energy greater than the threshold energy is incident on a metal surface, the excess energy is transferred to the photoelectron as kinetic energy. In this option, the energy of the photon (E) is 15 eV, which is greater than the threshold energy of the metal (10 eV). Therefore, the kinetic energy of the photoelectron will be greater than in option (1). This option is correct.
Option 3: If intensity of photon increases but energy remains the same, then kinetic energy of photoelectron remains the same.
The intensity of light refers to the number of photons incident per unit area per unit time. It does not affect the energy of individual photons. Therefore, if the intensity of photons increases while the energy of each photon remains the same, the total number of photons incident on the metal surface increases. However, the energy of each individual photon remains unchanged.
Since the energy of each photon remains the same, the kinetic energy transferred to each photoelectron will also remain the same. Therefore, this option is correct.
Option 4: If intensity of photon increases but energy remains the same, then kinetic energy of photoelectron increases.
This option is incorrect. As mentioned earlier, the energy of each photon remains the same even if the intensity increases. Therefore, the kinetic energy transferred to each photoelectron will not increase. The total number of photoelectrons emitted may increase due to the increased intensity, but the kinetic energy of each individual photoelectron will remain constant.
Conclusion:
The incorrect option is Option 4. If the intensity of photons increases while the energy of each photon remains the same, the kinetic energy of the photoelectron will not increase. The energy of each individual photon determines the kinetic energy transferred to the photoelectrons.
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The threshold energy of a metal is 10 eV. Identify the incorrect option. (E = energy of one photon) (1) If E = 12 eV, photoelectric effect occurs (2) If E = 15 eV, kinetic energy of electron is more than option (1) (3) If intensity of photon increases but energy remain same, then kinetic energy of photoelectron remains same. (4) If intensity of photon increase but energy remain same, then kinetic energy of photoelectron increase.?
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The threshold energy of a metal is 10 eV. Identify the incorrect option. (E = energy of one photon) (1) If E = 12 eV, photoelectric effect occurs (2) If E = 15 eV, kinetic energy of electron is more than option (1) (3) If intensity of photon increases but energy remain same, then kinetic energy of photoelectron remains same. (4) If intensity of photon increase but energy remain same, then kinetic energy of photoelectron increase.? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about The threshold energy of a metal is 10 eV. Identify the incorrect option. (E = energy of one photon) (1) If E = 12 eV, photoelectric effect occurs (2) If E = 15 eV, kinetic energy of electron is more than option (1) (3) If intensity of photon increases but energy remain same, then kinetic energy of photoelectron remains same. (4) If intensity of photon increase but energy remain same, then kinetic energy of photoelectron increase.? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The threshold energy of a metal is 10 eV. Identify the incorrect option. (E = energy of one photon) (1) If E = 12 eV, photoelectric effect occurs (2) If E = 15 eV, kinetic energy of electron is more than option (1) (3) If intensity of photon increases but energy remain same, then kinetic energy of photoelectron remains same. (4) If intensity of photon increase but energy remain same, then kinetic energy of photoelectron increase.?.
The threshold energy of a metal is 10 eV. Identify the incorrect option. (E = energy of one photon) (1) If E = 12 eV, photoelectric effect occurs (2) If E = 15 eV, kinetic energy of electron is more than option (1) (3) If intensity of photon increases but energy remain same, then kinetic energy of photoelectron remains same. (4) If intensity of photon increase but energy remain same, then kinetic energy of photoelectron increase.? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about The threshold energy of a metal is 10 eV. Identify the incorrect option. (E = energy of one photon) (1) If E = 12 eV, photoelectric effect occurs (2) If E = 15 eV, kinetic energy of electron is more than option (1) (3) If intensity of photon increases but energy remain same, then kinetic energy of photoelectron remains same. (4) If intensity of photon increase but energy remain same, then kinetic energy of photoelectron increase.? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The threshold energy of a metal is 10 eV. Identify the incorrect option. (E = energy of one photon) (1) If E = 12 eV, photoelectric effect occurs (2) If E = 15 eV, kinetic energy of electron is more than option (1) (3) If intensity of photon increases but energy remain same, then kinetic energy of photoelectron remains same. (4) If intensity of photon increase but energy remain same, then kinetic energy of photoelectron increase.?.
Solutions for The threshold energy of a metal is 10 eV. Identify the incorrect option. (E = energy of one photon) (1) If E = 12 eV, photoelectric effect occurs (2) If E = 15 eV, kinetic energy of electron is more than option (1) (3) If intensity of photon increases but energy remain same, then kinetic energy of photoelectron remains same. (4) If intensity of photon increase but energy remain same, then kinetic energy of photoelectron increase.? in English & in Hindi are available as part of our courses for JEE.
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The threshold energy of a metal is 10 eV. Identify the incorrect option. (E = energy of one photon) (1) If E = 12 eV, photoelectric effect occurs (2) If E = 15 eV, kinetic energy of electron is more than option (1) (3) If intensity of photon increases but energy remain same, then kinetic energy of photoelectron remains same. (4) If intensity of photon increase but energy remain same, then kinetic energy of photoelectron increase.?, a detailed solution for The threshold energy of a metal is 10 eV. Identify the incorrect option. (E = energy of one photon) (1) If E = 12 eV, photoelectric effect occurs (2) If E = 15 eV, kinetic energy of electron is more than option (1) (3) If intensity of photon increases but energy remain same, then kinetic energy of photoelectron remains same. (4) If intensity of photon increase but energy remain same, then kinetic energy of photoelectron increase.? has been provided alongside types of The threshold energy of a metal is 10 eV. Identify the incorrect option. (E = energy of one photon) (1) If E = 12 eV, photoelectric effect occurs (2) If E = 15 eV, kinetic energy of electron is more than option (1) (3) If intensity of photon increases but energy remain same, then kinetic energy of photoelectron remains same. (4) If intensity of photon increase but energy remain same, then kinetic energy of photoelectron increase.? theory, EduRev gives you an
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