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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.

Asked in JEE Main 24th Feb 1st Shift 2021 · Matter wave against photon

• (1) Statement I is false but Statement II is true.
• (2) Both Statement I and Statement II are true.
• (3) Statement I is true but Statement II is false.
• (4) Both Statement I and Statement II are false.

Step-by-step solution

Why the other options are wrong

• (1) comes from doubting λ=h/p while accepting the false claim about shorter wavelengths
• (2) comes from accepting Statement II, which has the dependence backwards
• (4) comes from rejecting λ=h/p as well

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