An object placed 15cm from a converging lens forms a real image whose magnification is 2.0. What is the focal length of the lens?
a
5.00cm
b
10.00cm
c
15.00 cm
d
18.00 cm
e
20.00cm
Explanation
Correct Option
bNo explanation available
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Fikun_Obems
1 year ago
U= 15cm , M= 2cm , V= ?
M= V/U , 2=V/15 ,V=30cm
M= V/f -1
2+1= 30/f
3= 30/f
f= 30/3
f= 10cm
