JEE Mains 30-Jan-2023 Shift 1 Solved Paper

A point source of light is placed at the centre of curvature of a hemispherical surface. The source emits a power of 24W The radius of curvature of hemisphere is 10‌cm and the inner surface is completely reflecting. The force on the hemisphere due to the light falling on it is ________ ×10−8N