A boy is trying to start a fire by focusing sunlight on a piece of paper using an equiconvex lens of focal length 10 cm. The diameter of the sun is 
and its mean distance from the earth is 
. What is the diameter of the sun ’ s image on the paper?.
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
: 
size of the image 
size of the image 
9.2 
10 ‐ 4 m
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