The real image of an object formed by a converging lens of focal length 15cm, is three times the size of the object. Calculate the object distance
a
60cm
b
30cm
c
20cm
d
15cm
Explanation
Correct Option
cNo explanation available
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s.samuel
2 years ago
Is the v not suppose to be negative, the image is virtual I think 
Please someone should make me understand
