An object is placed at a distance of 10 cm from a convex lens of power 5D. Find the position of the image :
Text Solution
Verified by ExpertsThe correct answer is:
C
The focal length of the convex lens
f = 
m
or f = 
× 100 cm
or f = 20 cm
From the relation, we get
= 
– 
— here, f = 20 cm, u = – 10 cm
therefore, 
= 
+ 
= 
+ 
= 
= – 
Hence v = – 20 cm
Therefore, the image will be formed at a distance of 20 cm on the same side of the object.
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