focal length of concave and convex mirror is positive or negative ?
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Answered by
6
It's -ve in concave but +ve in covex lens. Don't make mistakes here. Could cost you marks
MK20022512:
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She was asking abt mirror not lens..
Bt ur answer is crct
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Answered by
3
the focal length, is positive for a concave mirror, and negative for a convex mirror. When the image distance is positive, the image is on the same side of the mirror as the object, and it is real and inverted. When the image distance is negative, the image is behind the mirror, so the image is virtual and upright.
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