Question

11. Write the experimetal procedure in the experiment to show the focal length of the convex lens depend on the surrounding medium ?​

Answer 1

Answer:

Take a beaker whose height is much greater than the focal length of the lens and fill it with water. ii) Keep a black stone at the bottom of the vessel. iii) Now dip the lens into water using circular lens holder such that it is at a distance which is less than or equal to focal length of the lens in air.

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