The height of mercury barometer is 75 cm at sea level and 50 cm at top of a hill. Ratio of density of mercury to that of air is 10 4 the height of the hill is
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Verified by ExpertsThe correct answer is:
B
Difference of pressure between sea level and the top of the hill
.......(i)
and pressure difference due to h meters of air 
...... (ii)
By equating (i) and (ii) we get 
Height of the hill = 2.5 km.
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