Two wires of the same length and same material but radii in the ratio of 1:2 are stretched by unequal forces to produce equal elongation. The ratio of the two forces is
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a
1:1
b
1:2
c
1:3
d
1:4
answer is D.
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Detailed Solution
Y=FlaΔlIn the given problem, Y,l and Δl are constants.∴ F∝a or F∝πr2 or F∝r2 or F1F2=r12r22=14