Q18DQ
Question
A spherical air bubble in water can function as a lens. Is it a converging or diverging lens? How is its focal length related to its radius?
Step-by-Step Solution
Verified Answer
Lens is converging. And focal length proportion to the radius of curvature.
1Step 1: Definition of focal length
The term focal length may be defined as the distance between the center of mirror and its focus.
2Step 2: Explain reason of question
The spherical drop of water acts as a converging lens and is proportion to the radius of curvature of the drop.
Hence, lens is converging and focal length proportion to the radius of curvature.
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