Question

Light with an energy flux of 25 × 10⁴ Wm⁻² falls on a
perfectly reflecting surface at normal incidence. If the surface
area is 15 cm², the average force exerted on the surface is :
[2014]
(a) 1.25 × 10⁻⁶ N (b) 2.50 × 10⁻⁶ N
(c) 1.20 × 10⁻⁶ N (d) 3.0 × 10⁻⁶ N

Answer 1

Answer:

a) 1.25*10^-6N

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