Problem 23.24 An object is placed a distance r in front of a wall, where r exact

Question

Problem 23.24

An object is placed a distance r in front of a wall, where rexactly equals the radius of curvature of a certain concave mirror.

Part A

At what distance from the wall should this mirror be placed so that a real image of the object is formed on the wall?

Express your answer in terms of r.

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Part B

What is the magnification of the image? Follow the sign conventions.

Express your answer using three significant figures.

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Problem 23.24

An object is placed a distance r in front of a wall, where rexactly equals the radius of curvature of a certain concave mirror.

Part A

At what distance from the wall should this mirror be placed so that a real image of the object is formed on the wall?

Express your answer in terms of r.

di =

SubmitMy AnswersGive Up

Part B

What is the magnification of the image? Follow the sign conventions.

Express your answer using three significant figures.

m =

SubmitMy AnswersGive Up

Explanation / Answer

1/di + 1/do = 1/f

f = r/2

do = di-r

1/di + 1/di-r = 2/r

by solvingthis

di = 1.71r

m = -di/do

m = -1.71r/(1.71r-r)

m = -2.41

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