A convex lens is dipped in a liquid whose refractive index is equal to the…
PYQ UPPSC LT Grade (Assistant Teacher) 2025
A convex lens is dipped in a liquid whose refractive index is equal to the refractive index of the lens. Then the focal length of the lens will :
- A.
Become zero
- B.
Remain unchanged
- C.
Become infinite
- D.
Become small but non-zero
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