Science, asked by Yaman3845, 1 year ago

Why does a mirror have one principal focus but lens has two principal foci ?

Answers

Answered by pawanjhahaz1

because lens is bounded by two spherical Mirrors

Answered by rayyanalbeez999

This is because it is a transparent medium having two surfaces out of which atleast 1 is spherical. since a double concave lens or concave lens has 2 spherical surfaces therefore they have 2 focal lengths

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