User Forum

Subject :NSO    Class : Class 8

The diagram shows a simple mercury barometer. The mercury level is at a height h when the atmospheric pressure is 100000 Pa.

What is the pressure at P?

A 40000 Pa
B 60000 Pa
C 100000 Pa
D 140000 Pa


Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

Ans 2:

Class : Class 10
The common error is to think that pressure at 0.4h above the surface of the reservoir of mercury is 0.4 times the atmospheric pressure. The pressure at p is caused by the weight of mercury above point P. Thus preesure at P is equal to : 0.6x 100000 = 60000 Pa

Ans 3:

Class : Class 7
everybody just copy and paste it, can anyone explain in an easier way

Ans 4:

Class : Class 7
answer is b

Post Your Answer