The loss in weight of a solid when immersed in a liquid at 0oC is Wo and at toC is W. If cubical coefficients of expansion of the solid and the liquid are γS and γL,respectively, then W is equal to
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a
W01+γS−γLt
b
W01−γS−γLt
c
W0γS−γLt
d
W0t/γS−γL
answer is A.
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Detailed Solution
U0=V0σL0g=W0 and Ut=VtσLtg=WWW0=VtV0×σLtσL0=1+γBΔθ1+γLΔθ =1+γSΔθ1+γLΔθ−1=1+γSΔθ−γLΔθ =W=W01+γS−γLΔθ =W01+γS−γLt