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25 7. Parallel beam of light incident normally on a wall illuminates a round spot of radius 4.0 cm on it. When a ball, surface of which is mirrored is placed with its centre on the axis of the beam and at a distance of 11 cm from the wall, a large part of the wall is illuminated, but at the centre a fireular shadow of radius 52 cm is formed. Find radius of the ball. Scm

25 7. Parallel beam of light incident normally on a wall illuminates a round spot of radius 4.0 cm on it. When a ball, surface of which is mirrored is placed with its centre on the axis of the beam and at a distance of 11 cm from the wall, a large part of the wall is illuminated, but at the centre a fireular shadow of radius 52 cm is formed. Find radius of the ball. Scm

College Physics
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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28 7. Parallel beam of light incident normally on a wall illuminates a round spot of radius 4.0 cm on it. When a ball, surface of which is mirrored is placed with its centre on the axis of the beam and at a distance of 11 cm from the wall, a large part of the wall is illuminated, but at the centre a circular shadow of radius 52 cm is formed. Find radius of the ball. Scm rith enqular
Transcribed Image Text:28 7. Parallel beam of light incident normally on a wall illuminates a round spot of radius 4.0 cm on it. When a ball, surface of which is mirrored is placed with its centre on the axis of the beam and at a distance of 11 cm from the wall, a large part of the wall is illuminated, but at the centre a circular shadow of radius 52 cm is formed. Find radius of the ball. Scm rith enqular
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