Q.

Coefficient of cubical expansion of a metal cube is 'γ' increase in temperature for which the volume of the cube increases by 5% is xγ where x=

Moderate

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0.05

1.05

0.15

1.15

answer is 1.

(Detailed Solution Below)

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Detailed Solution

final volume V2=V+5100V V is initial volume V2=105100VV2=1.05V ; here V1=V = initial volume coefficient of cubicl expansion γ=V2-V1V1ΔT ⇒V2=V11+γΔT 1.05v=v1+γΔT 0.05=γΔT ΔT=0.05γ x=0.05

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