.A concave lens of refractive index 1.5 is immersed in a medium of refractive index 1.65. What is the nature of the lens?
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A concave lens of refractive index 1.5 is immersed in a medium of refractive index 1.65. What is the nature of the lens ? Here, a concave lens is placed in a medium of refractive index greater than the refractive index of the material of the lens. So, the given lens will behave as a diverging lens.
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