A spaceship launched from the Earth to the Venus. The distance of sun to Venus is 108 x 106km while to Earth it is 150 x 106km. If temperature of spaceship at earth is 300 K, find the temperature at...

A spaceship launched from the Earth to the Venus. The distance of sun to Venus is 108 x 106km while to Earth it is 150 x 106km. If temperature of spaceship at earth is 300 K, find the temperature at Venus.

Sun's surface at 5800 K emits radiation at wavelength of 0.5 A furnace at 300°C will emit through a small opening a radiation at a wavelength of nearly- (a) 10 p. (b) 5 p. (c) 0.25 p. (d) 0.025 p.