Questions
Light with an energy flux of falls on a non reflecting surface at normal incidence. If the surface has an area of . The average force exerted on the surae during a 30 minute time spam is
detailed solution
Correct option is A
The average force exerted on non reflecting surface is F=IcA=18×203×108=1.2×10−6NTalk to our academic expert!
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A plane em wave of wave intensity of 10 W/m2 strikes a small mirror of area 20 cm2, held perpendicular to the approaching wave. The radiation force on the mirror will be
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