Question

B. Why a spoon in a cup of tea appears broken ?

Answer 1

When light travels through to media which has a higher index of refraction (from air to tea), the light will bend, causing the image to appear bent.

Explanation:

When light travels through to media which has a higher index of refraction (from air to tea), the light will bend, causing the image to appear bent. Tea has a higher index of refraction than air, so light will travel slower once the light reaches the surface of the tea. See Refraction and Light Bending for more information.

Hope this helps!