The intensity of sun on earth is 1400W/m2. Assuming earth to be a black body. Calculate radiation pressure?
Radiations of intensity 0.5W/m2 are striking a metal plate. The pressure on the plate is
Calculate the modulus of elasticity for an applied force of 200 N on 0.1 m2 area resulting in change in length of a chain of 2 m by 0.004 m.