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Chapter 35: Q. 26 (page 1017)

In figure p35.26, parallel rays from the left are focused to a point at two locations on the optical axis. find the position of each location, giving your answer as a distance left or right of the lens.

Short Answer

Expert verified

The position of each location, giving your answer as a distance left or right of the lens isS'=-1cm.

Step by step solution

01

Given information 

We need to find the image distance for the mirror .

02

Simplification 

By using the formula, we have to solve S'

S'=SfS-f

Here, Sis the distance between matter, fis the focal length of the mirror andS'is the position of the location.

Substituting the value in equation,

S'=(3cm)+(-1.5cm)(3cm)-(-1.5cm)

S'=-4.5cm24.5cm

S'=-1cm.

03

Diagrammatic representation

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