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A convex lens is placed in water. a. ...

A convex lens is placed in water.
a. Will there be any change in its focal length? B. Give reason.

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No
b. Focal length of a mirror does not dpend upen the refractive index
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NEW JOYTHI PUBLICATION-RAY OPTICS AND OPTICAL INSTRUMENTS -EVALUATION QUESTION AND ANSWERS
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  15. You are given two convex lenses. a. What is the focal length of the ...

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