0
Infinity.because the distance of object from mirror"p" and the distance from image to mirror"q" are equal,so by using formula
1/f=1/p+1/q
we can find the answer
as the image of plane mirror is virtual,so"q" is taken negative,so putting values
1/f=1/p-1/p(bcz p=q)
1/f=0
f=1/0
and any thing divided by zero is infinity.
hope this helps
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∙ 11y ago
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