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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A pulse of light of duration 100 nm is absorbed completely by a small object initially at rest. Power of the pulse is 30 mW and the speed of light is 3 * 10^8 m/s. The final momentum of

A pulse of light of duration 100 nm is absorbed completely by a small object initially at rest. Power of the pulse is 30 mW and the speed of light is 3 * 10^8 m/s. The final momentum of

The anode voltage of a photocell is kept fixed. The wavelength lemda of the light falling on the cathode is gradually changed. The plate current I of the photocell varies as follows: