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A laser beam of wavelength lambda(1) = 5...

A laser beam of wavelength `lambda_(1) = 5 xx 10^(– 7) m` strikes normally a blackened plate and produces a force of `10^(– 5) N`. Mass of the plate is `10 g` and its specific heat capacity is `400 J kg^(–1) K^(–1)`. At what rate will the temperature of the plate rise? Assume no heat loss to the surrounding.

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The correct Answer is:
`750 Ks^(-1)`
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