Question
Physics Question on Optics
A convex lens is dipped in a liquid whose refractive index is equal to the refractive index of the lens. What is its focal length?
A
Focal length will become zero
B
Focal length will reduce, but not become zero
C
Remains unchanged
D
Focal length will become infinite
Answer
Focal length will become infinite
Explanation
Solution
The correct option is (D): Focal length will become infinite