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What is the momentum of a photon? The distractors in this question—Zero, mc, hc/f—do not satisfy the exact condition stated.
Zero is incorrect because it describes a different quantity or phenomenon and does not meet the stated condition. Momentum of photon p = E/c = hf/c = h/λ even though photon has no rest mass.
FAQ
Common questions and clear answers for this topic.
Physics typically makes up a small portion of the General Science questions, usually focused on concepts rather than numerical problems.
Basic mechanics, heat, sound and light, and electricity and magnetism are the areas that come up most consistently across previous papers.
Rarely. Most questions are conceptual and test everyday understanding rather than calculation skills.
NCERT textbooks from classes 9 and 10 build a strong enough conceptual base for most of what SSC CGL asks.
Connecting concepts to everyday observations, like why a thermos keeps tea warm, makes them far easier to recall than memorizing definitions.
