Pressure Barometer NDA Questions

NDA Physics

Pressure Barometer MCQ Questions


1.
What is the SI unit of pressure?
A.
Pascal
B.
Newton
C.
Joule
D.
Kilogram
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ANSWER :
A. Pascal
2.
Which of the following instruments is used to measure atmospheric pressure?
A.
Thermometer
B.
Barometer
C.
Hygrometer
D.
Manometer
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ANSWER :
B. Barometer
3.
How does the pressure exerted by a fluid change with depth?
A.
Increases linearly with depth
B.
Decreases linearly with depth
C.
Remains constant with depth
D.
Increases exponentially with depth
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ANSWER :
A. Increases linearly with depth
4.
Which principle explains why a ship floats on water?
A.
Pascals principle
B.
Archimedes' principle
C.
Bernoulli's principle
D.
Boyle's law
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ANSWER :
B. Archimedes' principle
5.
What is the pressure exerted by a column of mercury 76 cm high, given that the density of mercury is 13,600 kg/m³ and the acceleration due to gravity is 98 m/s²?
A.
101,920 Pa
B.
10192 Pa
C.
10,192 Pa
D.
1019 Pa
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ANSWER :
A. 101,920 Pa
6.
Why does atmospheric pressure decrease as altitude increases?
A.
Due to an increase in air density
B.
Due to a decrease in air density
C.
Due to an increase in temperature
D.
Due to a decrease in temperature
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ANSWER :
B. Due to a decrease in air density