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Question

A slide projector gives a magnification of 10. If a slide of dimensions 3cmx2cm is projected on the screen, the area of the image on the screen is:


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Solution

Step 1: Given data

The magnification of the slide projector is M=10.

the dimension of the slide is 3cmx2cm=6cm2.

Step 2: Magnification

  1. The magnification of a slide is defined as the ratio of the image area and object area.
  2. Magnification=ImageareaObjectarea

Step 3: Finding the area of the image

As we know, Magnification=ImageareaObjectarea.

So,

Magnification=ImageareaObjectareaorImagearea=Magnification×Objectarea=10×6cm2orImagearea=60cm2

Therefore, the area of the image on the screen is 60cm2.


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