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Question

A slide projector gives a magnification 10. If a slide of dimensions 3 cm × 2 cm is projected on the screen the area of image screen is

A
6000 cm2
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B
600 cm2
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C
602 cm2
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D
6 cm2
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Solution

The correct option is A 600 cm2
m = 10
Area of the slide (original) =3×2=6cm2
, as each slide after magnification becomes 3×10=30cm and 2×10=20cm. then
Area of the slide on the screen =30×20=600cm2


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