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Consider the following statements with reference to electromagnetic radiation:
Waves with shorter wavelengths have more energy.
X-rays have a higher frequency than gamma rays.
All electromagnetic radiations travel at the same speed through the vacuum.
Which of the statements given above is/are correct?
- a)3 only
- b)2 and 3 only
- c)1 and 3 only
- d)1, 2 and 3
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements with reference to electromagnetic r...
- Electromagnetic radiation is a type of energy that is commonly known as light. The light travels in waves, and all electromagnetic radiation travels at the same speed which is about 3.0 * 108 meters per second through a vacuum. It is commonly known as the "speed of light"; nothing can move faster than the speed of light. Hence statement 3 is correct.
- A wavelength is one cycle of a wave. It is measured as the distance between any two consecutive peaks (is the highest point of the wave) of a wave. If the wavelength of a light wave is shorter, that means that the frequency will be higher because one cycle can pass in a shorter amount of time. Light waves with shorter wavelengths (and higher frequencies) have more energy, so types of light like gamma rays, X-rays, and ultraviolet light are more energetic than visible light, and infrared, microwaves, and radio waves are less energetic than the light in the visible spectrum. Hence statement 1 is correct and 2 is not correct.
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Consider the following statements with reference to electromagnetic r...
Explanation:
Electromagnetic radiation refers to the energy waves that travel through space and carry energy from one place to another. It includes a wide range of wavelengths and frequencies, ranging from radio waves to gamma rays.
Statement 1: Waves with shorter wavelengths have more energy.
This statement is correct. The energy of an electromagnetic wave is directly proportional to its frequency. Higher frequency waves have shorter wavelengths and therefore carry more energy. This can be seen in the electromagnetic spectrum, where gamma rays, which have the highest frequency and shortest wavelength, are the most energetic form of electromagnetic radiation.
Statement 2: X-rays have a higher frequency than gamma rays.
This statement is incorrect. X-rays have lower frequencies than gamma rays. Gamma rays have the highest frequency in the electromagnetic spectrum, while X-rays have a slightly lower frequency. However, both X-rays and gamma rays are high-energy forms of electromagnetic radiation.
Statement 3: All electromagnetic radiations travel at the same speed through the vacuum.
This statement is correct. According to the fundamental principles of electromagnetism, all electromagnetic waves, regardless of their frequency or wavelength, travel at the same speed through a vacuum. This speed is commonly referred to as the speed of light and is approximately 3 x 10^8 meters per second.
Therefore, the correct answer is option 'C' - 1 and 3 only. Waves with shorter wavelengths have more energy, and all electromagnetic radiations travel at the same speed through the vacuum. X-rays have a lower frequency than gamma rays, so statement 2 is incorrect.
Electromagnetic radiation refers to the energy waves that travel through space and carry energy from one place to another. It includes a wide range of wavelengths and frequencies, ranging from radio waves to gamma rays.
Statement 1: Waves with shorter wavelengths have more energy.
This statement is correct. The energy of an electromagnetic wave is directly proportional to its frequency. Higher frequency waves have shorter wavelengths and therefore carry more energy. This can be seen in the electromagnetic spectrum, where gamma rays, which have the highest frequency and shortest wavelength, are the most energetic form of electromagnetic radiation.
Statement 2: X-rays have a higher frequency than gamma rays.
This statement is incorrect. X-rays have lower frequencies than gamma rays. Gamma rays have the highest frequency in the electromagnetic spectrum, while X-rays have a slightly lower frequency. However, both X-rays and gamma rays are high-energy forms of electromagnetic radiation.
Statement 3: All electromagnetic radiations travel at the same speed through the vacuum.
This statement is correct. According to the fundamental principles of electromagnetism, all electromagnetic waves, regardless of their frequency or wavelength, travel at the same speed through a vacuum. This speed is commonly referred to as the speed of light and is approximately 3 x 10^8 meters per second.
Therefore, the correct answer is option 'C' - 1 and 3 only. Waves with shorter wavelengths have more energy, and all electromagnetic radiations travel at the same speed through the vacuum. X-rays have a lower frequency than gamma rays, so statement 2 is incorrect.
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Consider the following statements with reference to electromagnetic radiation: Waves with shorter wavelengths have more energy. X-rays have a higher frequency than gamma rays. All electromagnetic radiations travel at the same speed through the vacuum. Which of the statements given above is/are correct?a)3 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer?
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