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The pressure of a gas filled in the bulb...

The pressure of a gas filled in the bulb of a constant volume gas thermometer at temperatures `0°C and 100°C` are 27.50 cm and 37.50 cm of Hg respectively. At an unknown temperature the pressure is 32.45 cm of Hg. Unknown temperature is -

A

`30^(@)C`

B

`39^(@)C`

C

`48.5^(@)C`

D

`29.6^(@)C`

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