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Given below are two statements:
| Assertion (A): | Mass of a moving photon varies inversely to the wavelength. |
| Reason (R): | Energy of the particle = Mass\(\times\)(speed of light)2. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Â Particle Nature of Light |
 51%
Level 3: 35%-60%
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Given below are two statements:
| Assertion (A): | The photoelectric effect demonstrates the wave nature of light. |
| Reason (R): | The number of photoelectrons emitted is proportional to the frequency of light. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Â Particle Nature of Light |
 76%
Level 2: 60%+
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | The relative velocity of two photons travelling in opposite directions is the velocity of light. |
| Reason (R): | The rest mass of photon is zero. |
In the light of the above statements choose the correct answer from the options given below:
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Â Particle Nature of Light |
 76%
Level 2: 60%+
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- 1(current)
Q. No.
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