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← JEE Main 2021 · 24 Feb · Shift 1
PhysicsSingle correct+4 / -1Question 18 of 90

JEE Main 2021 · 24 Feb · Shift 1, Physics question 18

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.

Choose one option
Answer and worked solution

Official answer: C

de Broglie. λ=hp\lambda=\frac hp, so equal momenta mean equal wavelengths (I true). A shorter wavelength means larger momentum and energy (II false).

(C)