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cse • paper_1 • mechanicscse-2014-subject-01-008

Reflected light — UPSC CSE 2014 Physics PYQ

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A mirror is moving through vacuum with a relativistic speed v in the x-direction. A beam of light with frequency \omega_i is normally incident (from x=\infty) on the mirror.

(i) What is the frequency of the reflected light expressed in terms of \omega_i, c and v?

(ii) What is the energy of each reflected photon?

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