1. Let the surface temperature of the Sun be Ts= 6000 K A small, spherical, black body is warmedup using sun light with the help of a thin lens, whose focal length is double the lens's diameterChoose the correct statement/(s)(a) The maximum temperature reached by the small sphere is nearly equal to 2121 K(b) the result depends on the radius of the small sphere(c) If a flat thin black disk of the same radius as that of the small sphere is used it's maximumtemperature would be nearly 2522 K(d) If a flat thin black disk of the same radius as that of the small sphere is used it's maximumtemperature would be nearly 2682 K

Animesh , 4 Years ago

Grade 11