cse • paper_1 • waves_oscillations
[UPSC CSE 2025] Polarisation and Modern Optics (Q316, 10M)
A light beam of wavelength 600\text{ nm} produced by a 20\text{ mW} laser source is incident on a plane mirror. Determine : (i) number of photons per second striking the surface of the mirror. (ii) force exerted by the light beam on the mirror.
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