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Q.

A metal ring of inner diameter D1  and cross-sectional area 'A' is fitted onto a wooden disc of diameter D2.(D2>D1) . If 'Y' is the young's modulus of the metal then the tension in the ring is

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a

AYD2D1

b

AY(D2−D1)D1

c

Y(D2−D1)AD1

d

YD1AD2

answer is B.

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Detailed Solution

T=yAeL T=yA(D2−D1)2D12T=yA(D2−D1)D1
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