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Question

Physics Question on thermal properties of matter

When a thermometer is taken from the melting ice to a warm liquid, the mercury level rises to 2th5\frac{2^{th}}{5} of the distance between the lower and the upper fixed points. The temperature of liquid in KK is

A

217.15217.15

B

313.15313.15

C

220220

D

330330

Answer

313.15313.15

Explanation

Solution

Here, temperature of liquid =25=\frac{2}{5} of distance between lower and upper fixed points =25×100=40C=\frac{2}{5}\times100=40^{\circ}C On Kelvin scale, TK=273.15+40=313.15KT_{K}=273.15+40=313.15\,K