A flat rectangular surface of dimension 15" cm"xx2" cm" is placed perpendicular to the direction of radiations (electromagnetic waves) falling over it. Surface absorbs half of radiation and reflects remaining half. Total momentum transfeered to the surface in 1s is 3xx10^(-4)kg-ms^(-1). The emissive power of source of radiation will be

A flat rectangular surface of dimension 15" cm"xx2" cm" is placed perp

1.	A flat rectangular surface of dimension 15" cm"xx2" cm" is placed perpendicular to the direction of radiations (electromagnetic waves) falling over it. Surface absorbs half of radiation and reflects remaining half. Total momentum transfeered to the surface in 1s is 3xx10^(-4)kg-ms^(-1). The emissive power of source of radiation will be
Answer» `10^(8)Wm^(-2)` `10^(9)Wm^(-2)` `10^(12)Wm^(-2)` `10^(6)Wm^(-2)` Answer :A