A camper is trying to start a fire by focusing sunlight onto a piece of paper. The diameter of the sun is 1.39 × 10⁹ m, and its mean distance from the earth is 1.50 × 10¹¹ m. The camper is using a converging lens whose focal length is 10.3 cm. (a) What is the area of the sun's image on the paper? (b) If 0.752 W of sunlight pass through the lens, what is the intensity of the sunlight at the paper? (a) Number i (b) Number i Units Units

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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A camper is trying to start a fire by focusing sunlight onto a piece of paper. The
diameter of the sun is 1.39 × 10⁹ m, and its mean distance from the earth is
1.50 × 1011
m. The camper is using a converging lens whose focal length is
10.3 cm. (a) What is the area of the sun's image on the paper? (b) If 0.752 W of
sunlight pass through the lens, what is the intensity of the sunlight at the paper?
(a) Number i
(b) Number i
Units
Units
Transcribed Image Text:A camper is trying to start a fire by focusing sunlight onto a piece of paper. The diameter of the sun is 1.39 × 10⁹ m, and its mean distance from the earth is 1.50 × 1011 m. The camper is using a converging lens whose focal length is 10.3 cm. (a) What is the area of the sun's image on the paper? (b) If 0.752 W of sunlight pass through the lens, what is the intensity of the sunlight at the paper? (a) Number i (b) Number i Units Units
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