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Image Formation by Convex Lens

Why goggles S...

Question

Why goggles (Sun glasses) have zero power even though their surfaces are curved? [2 MARKS]

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Solution

Explanation: 2 Marks

Both the surfaces of the Sun glasses are curved in the same direction. Moreover, the curvature is the same for both the surfaces.

Therefore P = (n-1) (1/R – 1/R) = 0

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