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Suppose the pressure at the surface of mercury in a barometer tube is P_1 and the pressure at the surface of mercury in the cup is P_2.

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asked Mar 26, 2018 in Physics by shabnam praween (19,050 points) ● 5 ● 6 ● 8

Suppose the pressure at the surface of mercury in a barometer tube is P1 and the pressure at the surface of mercury in the cup is P2.

(a) P1= 0, P2 = atmospheric pressure
(b) P1 = atmospheric pressure, P2= 0
(c) P1= P2 = atmospheric pressure
(d) P1 = P2 = 0.

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answered Mar 26, 2018 by santoshjha (25,550 points) ● 4 ● 5 ● 6
selected Mar 27, 2018 by Vikash Kumar
 
Best answer

(a) P1= 0, P2 = atmospheric pressure

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