Question

Diameter of a concave lens of focal length 37 cm is 6cm.It's thickness at the centre is 5mm. The speed of light in the material of the lens is

Answer 1

Answer -

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• Diameter of a plano - convex lens is 6 cm and thickness at the centre is 3mm If ... If speed of light in material of. lens is 2 x 10^8 m/s, the focal length of the lens is.

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