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 ?

Question

( A ) $6.5\times10^{–4}$ m
( B ) $12.4 \times 10^{–4}$ m
( C ) $9.2\times10^{–4}$ m
( D ) $6.5 \times10^{–5}$ m