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Q.

A film projector magnifies a 100 cm2 film strip on a screen. If the linear magnification is 4, the area of magnified film on the screen is

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a

1600 cm2

b

400 cm2

c

800 cm2

d

200 cm2

answer is A.

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Detailed Solution

mL=4 mA=m12 so that A′=A0×16=1600cm2
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