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 x 10^9 m and its means distance from the earth is 1.5 x 10^11 m. What is the diameter of the Sun's image on the paper - VgyanHub

Question:

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 x 10⁹ m and its means distance from the earth is 1.5 x 10 ¹¹ m. What is the diameter of the Sun’s image on the paper

Options :

(a) 6.5x10^-5 m
(b) 12.4x10^ m
(c) 9.2x10^-4 m
(d) 6.5x10^-4 m

Answer :

(c) 9.2×10^-4 m

Answer Steps :

step 1

step 2

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