JEE PYQ: Nuclear Physics Question 5
Question 5 - 2021 (24 Feb Shift 1)
Given below are two statements:
Statement-I: Two photons having equal linear momenta have equal wavelengths.
Statement-II: If the wavelength of photon is decreased, then the momentum and energy of a photon will also decrease.
In the light of the above statements, choose the correct answer from the options given below.
(1) Statement-I is false but Statement-II is true
(2) Both Statement-I and Statement-II are true
(3) Both Statement-I and Statement-II are false
(4) Statement-I is true but Statement-II is false
Show Answer
Answer: (4)
Solution
By theory. Statement-I is true (equal momenta implies equal wavelengths since $p = h/\lambda$). Statement-II is false (if wavelength decreases, momentum and energy increase, not decrease).
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