A small mirror of mass m is suspended by a massless thread of length /. Then the small angle through which the thread will be deflected when a short pulse of laser of energy E falls normal on the mirror ( c= speed of light in vacuum and g= acceleration due to gravity)
[4 Apr 2025 Shift 1]

Question

Examsnet · Accepted Answer

Correct Answer is : θ=‌2Emc√gl

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