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 1.39 \times 10^9 {\m} and its mean distance from the earth is 1.5 \times 10^{11} {\m}. What is the diameter of the Sun's image on the paper ?

Correct Answer is : 9.2×10−4m

AIPMT 2008 Physics and Chemistry Paper

Question : 30 of 100

Marks: +1, -0

A boy is trying to start a fire by focusing Sunlight on a piece of paper using an equiconvex lens of focal length 10‌cm. The diameter of the Sun is 1.39×109m and its mean distance from the earth is 1.5×1011m. What is the diameter of the Sun's image on the paper ?

6.5×10−5m
12.4×10−4m
9.2×10−4m
6.5×10−4m

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