A brass scale of barometer gives correct reading at 2^(@)C. The coefficient of thermal expansion for brass is 0.00002 ^(@)C^(-1). The barometer reads 75 cm at 27^(@)C. What is the atmospheric pressure at 2^(@)C ?

A brass scale of barometer gives correct reading at 2^(@)C. The coeffi

1.	A brass scale of barometer gives correct reading at 2^(@)C. The coefficient of thermal expansion for brass is 0.00002 ^(@)C^(-1). The barometer reads 75 cm at 27^(@)C. What is the atmospheric pressure at 2^(@)C ?
Answer» SOLUTION :`74.96 CM`