Mayur Vidhate
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Posted 4 year ago
What is the power of the concave lens?
1 Answer(s)
Shweta Jain
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Posted 4 year ago Shweta Jain Teacher Coach

The focal length of a concave surface is negative, whereas the focal length of a convex surface is positive. Therefore, for a lens, the power of a concave and convex lens is negative and positive respectively.