Electromagnetic Waves

A point source of light is placed at the centre of curvature of a hemispherical surface. The source emits a power of \(24 \mathrm{~W}\). The radius of curvature of hemisphere is \(10 \mathrm{~cm}\) and the inner surface is completely reflecting. The force on the hemisphere due to the light falling on it is ____________ \(\times~10^{-8} \mathrm{~N}\).