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AIPMT 2014 Physics and Chemistry Paper

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Question : 34

Total: 90

Light with an energy flux of 25×104Wm−2 falls on a perfectly reflecting surface at normal incidence. If the surface area is 15cm2, the average force exerted on the surface is :-

1.25×10−6N
2.50×10−6N
1.20×10−6N
3.0×10−6N

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