In the given figure, the height of a mercury barometer is 'h' cm when the atmospheric pressure is 101,000 Pa. Find the pressure at point X.
A
134.67 kPa
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B
156.37 kPa
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C
143.32 kPa
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D
75.75 kPa
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Solution
The correct option is D 75.75 kPa As per figure, Patm = 101,000 Pa = h cm
Pressure at X will be equal = Px = (h−h4) cm = 3h4 cm
Given, h = 101,000 Pa Px = 3h4 = 101,000 Pa×34
Or, Px = 75.75 kPa