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Swati from Ryan, Bengaluru
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:

Harsh Kant from Gyan Ganga Educational Academy, Raipur
Class : Class 9

Ans 2: (Master Answer)

Admin from revisewise, Noida
Class : Class 1
The correct answer is B.

Ans 3:

N Sankar Narahari from Madhavakripa English Nursery and Higher Primary School, Manipal
Class : Class 7
everybody just copy and paste it, can anyone explain in an easier way

Ans 4:

sk from psbb millennium school, Chennai
Class : Class 9

Ans 5:

N Sankar Narahari from Madhavakripa English Nursery and Higher Primary School, Manipal
Class : Class 7
answer is b

Ans 6:

Sumedha Mishra from xyz, School, Pune
Class : Class 8

Ans 7:

Vihaan Nair from Ambassador School, DUBAI
Class : Class 8

Ans 8:

Gokul Warrier M from SRI KUMARANS MALLASANDRA, BANGALORE
Class : Class 9

Ans 9:

chepz from abc school, pandikkad
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

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