question_answer

Amar and Kishan were going to their friend's house by walking. It was a hot sunny day of summer. Amar faced difficulty to see around him. While Kishan had cooling sunglasses. Kishan did not face such problem as Amar faced. Kishan explained the features of sunglasses to Amar and also advised him to buy them.

(i) What values are shown by Kishan?

(ii) Name the phenomenon on which cooling sunglasses works.

(iii) What is the resulting intensity of light, if both polariser and analyser are rotated through same angle?

Answer:

(i) Caring, intelligent and concerning.

(ii) Polarisation.

(iii) No change in intensity of light.