Write the characteristics of refraction.

Explanation

(i) When light passes from rarer medium to denser mecium it deviates towards normal in the denser medium. (ii) When light passes from denser medium to rarer medium it deviates away from normal in the rarer medium. (iii) In any refracting surface there will also be some reflection taking place. Thus, the intensity of refracted light will be lesser than the incident light. (iv) The phenomenon in which a part of light from a source undergoing reflection and the other part of light from the same source undergoing refraction at the same surface is called simultaneous reflection or simultaneous refraction.