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NDA General Science Physics Questions Part 1

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Question : 22

Total: 100

Which one of the following statements is not correct?

The radius of curvature of a concave mirror is twice its focal length
Power of a convex lens is negative and that of a concave lens is positive
The radius of curvature of a plane mirror is infinity
When a ray of light passes from an optically denser medium to an optically rarer medium, the angle of refraction is greater than the corresponding angle of incidence

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