Questions
Volume of mercury in the bulb of a thermometer is , area of cross section of capillary tube is . If the temperature is raised by , the length of mercury is ( )
detailed solution
Correct option is A
volume of mercury in the bulb of thermometer is V=10-6m3: area of cross section of capillarty tube is A=2×10-7m2 change in temperature is ΔT=100oClength of mercury in the tube is l=?real expansion of mercury is γreav=γr=18×10-5∘c−1 γr =ΔVV.Δt γr=A×lV.Δt l=γr.V.ΔtA substitute the given valuesl=18×10−5×10−6×1002×10−7 l=9×10-2m L=9 cmSimilar Questions
A gas obeys =constant in addition to PV=RT. If on heating, the temperature is doubled. The volume of the gas is
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