Science, asked by kiran757, 1 year ago

image of a distinct object is formed at 30 cm from a concave mirror .what is the focal length of the mirror​

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Answered by Tazzudaa
0

1/u + 1/v = 1/f

given u = -∞

1/v = 1/f

of v= f. f is positive. Image is behind the mirror.

When object is at infinity, then a point image (erect) at the focus is formed.

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