1.

Light of intensity l is incident perpendicularly on a perfectly reflecting plate of area A kept in a gravity free space. If the photons strike the plate symmetrically and initially the springs were at natural lengths, what is the maximum compression A. `(2lA)/(KC)`B. `(2lA)/(3KC)`C. `(3lA)/(2KC)`D. None of these

Answer» Correct Answer - A
`F=(2lA)/(c ), " "Deltax=(2F)/(2K)=(2.(2lA)/(c ))/(2K) = (2lA)/(CK)`


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