A convex lens is dipped in a liquid whose refractive index is equal to the refractive index of the lens. Then its focal length willbecome infinitebecome small, but non- zeroremain unchangedbecome zero
Question
A convex lens is dipped in a liquid whose refractive index is equal to the refractive index of the lens. Then its focal length willbecome infinitebecome small, but non- zeroremain unchangedbecome zero
Solution
When a convex lens is dipped in a liquid whose refractive index is equal to the refractive index of the lens, the lens will effectively disappear. This is because the light passing through the lens will not refract, as the refractive indices of the lens and the liquid are the same. Therefore, the lens will no longer converge or diverge light, and its focal length will become infinite.
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