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A concave spherical lens with radius of curvature of 0.2 m is filled with water.What is focal length of this lens system?Refractive index of water=4/3.Explain the ans.

A concave spherical lens with radius of curvature of 0.2 m is filled with water.What is focal length of this lens system?Refractive index of water=4/3.Explain the ans.


 

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