Planck's Theory NEET 2025 Level Structure of Atom Chemistry NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

Given below are two statements:

Assertion (A):	A black body is an ideal body that emits and absorbs radiation of all frequencies.
Reason (R):	The frequency of radiation emitted by a body goes from lower frequency to a higher frequency with an increase in temperature.

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: Planck's Theory |

From NCERT

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NEET 2026 - Target Batch - Vital

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NEET 2026 - Target Batch - Vital

Assertion (A):	The kinetic energy of photo-electrons increases with an increase in the frequency of incident light where v>v₀.
Reason (R):	Whenever the intensity of light is increased the number of photo-electron ejected always increases.

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: Planck's Theory |

From NCERT

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