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Sahay Sir > Question Answers > Arihant Physics by D.C Pandey > Volume 2 > Chapter 8 - Electromagnetic Waves > Light with an energy flux of 18 W/cm^2 falls on a non-reflecting surface at normal incidence. If the surface has an area of 20cm^2, the average force exerted on the surface during a half hour time span is

Light with an energy flux of 18 W/cm^2 falls on a non-reflecting surface at normal incidence. If the surface has an area of 20cm^2, the average force exerted on the surface during a half hour time span is

Light with an energy flux of 18 W/cm^2 falls on a non-reflecting surface at normal incidence. If the surface has an area of 20cm^2 the average force exerted on the surface during a half hour time span is