Light with an energy flux` 20 W//cm^2` falls on a non-reflecting surface at normal incidence. If the surface has an area of `30 cm^2`. the total momentum delivered ( for complete absorption)during 30 minutes is

Light with an energy flux of 20W//cm^2 falls on a non-reflecting surface at normal incidence. If the surface has an area of 30cm^2 , the total momentum delivered (for complete absorption) during 30 minutes 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 30 cm^(2) , the total momentum delivered (for complete absorption) during 30 minutes is: (a) 36xx10^(-5) kg m/s (b) 36xx10^(-4) kg m/s (c) 108xx10^(4) kg m/s (d) 1.08xx10^(7) kg m/s

Light with an energy flux of 9 W cm^(-2) ? falls on a nonreflecting surface at normal incidence. If the surface has an area of 20 cm^(2) . The total momentum delivered for complete absorption in one hour is

Light with an energy flux of 18 W//cm^(2) falls on a nonreflecting surface at normal incidence. If the surface has an area of 20 cm^(2) , find the average force exerted on the surface during a 30 minute time span.