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

Video Tutorial

Related Questions

If a high power heater is connected to electric mains, then the bulbs in the house become dim, because there is a

Two wires ‘A’ and ‘B’ of the same material have their lengths in the ratio 1: 2 and radii in the ratio 2: 1. The two wires are connected in parallel across a battery. The ratio of the heat produced in ‘A’ to the heat produced in ‘B’ for the same time is

A piece of fuse wire melts when a current of 15 ampere flows through it. With this current, if it dissipates 22.5 W, the resistance of fuse wire will be

Explore Our Courses