Physics, asked by sainavaneeth8, 1 year ago

Is focal length and object distance always negative in case of all two types of mirrors and lenses

Answers

Answered by ScannerGoogle
2
Object distance (u) is always negative in any case.

Focal length for concave(lens or mirror) is always negative.
Focal length for convex(lens or mirror) is always positive.

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Answered by suryansh060
0
No it is not negative in all cases
1)In concave lenses object distance is always negative and focal also in negative except one case.
2)In convex lens focal length is positive in all cases and object distance is also.
3)In convex lens focal is always positive except one case and object distance is always negative.
4)In concave lens object distance is always negative and focal length is negative.

sainavaneeth8: What’s the difference b/ w 3 and 4
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