Find out correct expression.
A swimming pool has dimension 20m × 3m. When it is filled water, what is the force on bottom?
5.880 × 106N
0
4.41 × 105N
8.82 × 105N
The SI unit of thrust is
dyne
N
m
Nm
For a floating body, its weight w and upthrust FB on it are related as
W > FB
W < FB
W = FB
Nothing can be said
Pick out the most accurate expression.
P = hρg
P = Ahρg
A body of weight W is floating in a liquid. Its apparent weight will be
equal to W
less than W
greater than W
zero
Unit of relative density is
gcm-3
Kg
No unit
Kgm-3
Which of the device does not contain liquid?
Simple barometer
Fortin barometer
Aneroid barometer
Both 1 and 2
Which of the following device is used to check the purity of milk?
Hydrometer
Lactometer
Barometer
None of these
The normal atmospheric pressure is
76m of Hg
76cm of Hg
79 Pa
76 Nm-2
