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A convex lens is immersed in a container...

A convex lens is immersed in a container of water. Will this cause a change its focal length ?

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Yes. The refractive index of glass with respect to air is more than the refractive index of glass with respect to water. The focal length of the convex lens will increase.
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ZEN PUBLICATION-LIGHT - REFLECTION AND REFRACTION-ZEN ADDITIONAL QUESTIONS SECTION (VERY SHORT ANSWER TYPE QUESTIONS) VSA
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