A) 1600 \[c{{m}^{2}}\]
B) 400 \[c{{m}^{2}}\]
C) 800 \[c{{m}^{2}}\]
D) 200 \[c{{m}^{2}}\]
Correct Answer: A
Solution :
Linear magnification = 4 Area! magnification = \[{{(linear\text{ }magnification)}^{2}}\] \[={{(4)}^{2}}=16\] Therefore, area of magnified film on the screen = areal magnification \[\times \] area \[=16\times 100\] \[=1600\,\,c{{m}^{2}}\]
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