Question

Match the statements of Column A with those of Column B.

Column A	Column B.
(A) Scattering (B) Total internal reflection (C) Refraction (D) Reflection	(a) Twinkling of stars (b) Formation of image by a plane mirror (c) Sparkling of diamond (d) Blue color of the sky

• A. A→d; B→c; C→a; D→b
• B. A→C; B→a; C→b; D→ d
• C. A →a; B→b; C→d; D→(d)
• D. A→b; B→d; C→C; D→a

Answer 1

The correct option is A

A→d; B→c; C→a; D→b

Explanation

A) Scattering - Blue color of the sky

1. When the sunlight travels through the atmosphere it get scatter. Different wavelength of light present in sunlight gets scatter depending upon their wavelength.
2. Blue color has smallest wavelength so it scatters the most and hence sky appears blue in color due to scattering.

(B) Total internal reflection -Sparkling of diamond

1. Sparkling of diamond is effect of total internal reflection
2. In this the light ray is reflected multiple number of times inside a body(i.e. suffers multiple reflection) and body appears to sparkles .

(C) Refraction -Twinkling of stars

1. When the light coming from stars enters the earth surface it gets refracted through different mediums
2. This cause the light ray to bend multiple times sometime the refracted beam reaches the human eye while sometimes it gets vanished and we see dark .
3. This is called twinkling effect

(D) Reflection - Formation of image by a plane mirror

1. When light ray falls on the plane mirror it undergoes reflection and the image is formed due to reflection of light ray .

Hence, the correct answer is option (a) A→b; B→d; C→C; D→a