The brass scale of a mercury barometer has been graduated at 0^(@)C. At 18^(@)C the barometer shows a pressure of 760 mm. Reduce the reading of the barometer to 0^(@)C. The coefficient of linear expansion of brass =1.9xx10^(-5)=1 and the coefficient of volume expansion of mercury gamma=1.8xx10^(-4).^(@)C^(-1)

The brass scale of a mercury barometer has been graduated at 0^(@)C. A

1.	The brass scale of a mercury barometer has been graduated at 0^(@)C. At 18^(@)C the barometer shows a pressure of 760 mm. Reduce the reading of the barometer to 0^(@)C. The coefficient of linear expansion of brass =1.9xx10^(-5)=1 and the coefficient of volume expansion of mercury gamma=1.8xx10^(-4).^(@)C^(-1)
Answer» ANSWER :757.3 MM

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