Math, asked by abhijeetshrivastav97, 9 months ago

. In a concave mirror an object is placed at a distance x from the focus and the real image is
formed at a distance y from the focus. The focal length of the mirror is

a x~y
b√xy
c x+y
d none of these

Answers

Answered by gurpreetmaksar

0

Answer:

none of these answer is1/y+1/x

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