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Question

The linear magnification for a mirror is the ratio of the size of the image to the size of the object, and is denoted by m. Then m is equal to (symbols have their ususal meanings)
  1. ufuf
  2. u+fuf
  3. ffu
  4. f+uuf

A
ufuf
B
u+fuf
C
ffu
D
f+uuf
Solution
Verified by Toppr

m=h1h0=vu......(i)
From mirror formula
1f=1v+1u........(ii)
Multiplying equation (ii) by u, we get
uf=uv+1 or uv=uf1=uff
or vu or m=vu=fuf=ffu

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