The brass scale of a barometer gives correct reading at 0º C. Coefficient of thermal expansion of brass is 0.00002/º C. The barometer reads 75 cm at 27º C. What is the correct atmospheric pressure at 27ºC?
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(75.0405 cm)
Sol. h = h 0 (1 + αΔθ )
h = 75{1 + 0.00002 × 27}
h = 75.0405 cm
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