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Physics Question on Thermodynamics

Calorie is defined as the amount of heat required to raise temperature of 1 g of water by 1∘^{\circ}C and it is defined under which of the following conditions ?

A

From 14.5∘^{\circ}C to 15.5∘^{\circ}C at 760 mm of Hg

B

From 98.5∘^{\circ}C to 99.5∘^{\circ}C at 760 mm of Hg

C

From 13.5∘^{\circ}C to 14.5∘^{\circ}C at 76 mm of Hg

D

From 3.5∘^{\circ}C to 4.5∘^{\circ}C at 76 mm of Hg

Answer

From 14.5∘^{\circ}C to 15.5∘^{\circ}C at 760 mm of Hg

Explanation

Solution

1 calorie is the heat required to raise the temperature of 1 g of water from 14.5∘^{\circ}C to 15.5∘^{\circ}C at 760 mm of Hg.
Hence, correct option is (a).