Education

CBSE notes-Light A beam of red light is allowed to fall in turn on (a) a black cloth (b) red cloth (c) white cloth (d) blue cloth. Describe and explain the appearance in each case. (a) When red light falls on a black cloth it still appears black, because it does not reflect the red colour instead, it absorbs the light falling on it. (b) When red light falls on a red cloth it still appears red, because it reflects only that colour. (c) When red light falls on a white cloth it changes to a red coloured cloth, because the white cloth reflects the red colour of the light. (d) When red light falls on a blue cloth it changes to black coloured cloth, because there is no blue colour in the red light which can be reflected