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what will happen when we will put convex mirror and concave mirror inside the water?

Asked by shrini sugandha 4th February 2011, 12:00 AM
Answered by Expert
Dear student,
Water's refractive index is in between air's and glass's. Therefore there is smaller change in refractive index between water and glass than between air and glass. Therefore, when the lens is put in water, then the light ray is bent by smaller amount after refraction. Therefore the ray travels for longer distance before it meets the principal axis. In other words focal length is larger.
Hope this helps.
Answered by Expert 4th February 2011, 10:52 AM
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