A converging lens of focal length 15cm is used to obtain a real image magnified \(1\frac{1}{2}\) times. Calculate the distance of the image from the lens?
a
37.5cm
b
22.5cm
c
15cm
d
7.5cm
e
3.3cm
Explanation
Correct Option
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Destinedtowin
3 years ago
M=v/u
M=3/2=1.5
1.5=v/u
v=1.5u,f=15
1/v+1/u=1/f
1/1.5+1/u=1/15
find the lcm
1+1.5/1.5u=1/15
1.5u=2.5x15
1.5u=37.5
u=37.5/1.5
u=25
recall that
V=1.5u
V=1.5x25
the image distance(V)=37.5cm



