Physics MCQs for Class 9 with Answers
Rate of doing work is called
Energy
Torque
Power
Momentum
In which of the following state molecules do not leave their position?
Solid
Liquid
Gas
Plasma
Which of the substance is lightest one?
Copper
Aluminium
Mercury
Lead
The deforming force is called _______________
Stress
Strain
(‘radio-button-click-target’, “Young’s Modulus”)
Nil
At a height of 30 km, atmospheric pressure is:
101300 Pa
1000 Pa
10000 Pa
101325 Pa
If K = 150 N/m and elasticity is 0.20 m than:
F = 30N
F= =31N
F = 32N
F = 29N
Ships and submarines float partially or completely according to:
(‘radio-button-click-target’, “Newton’s law”)(‘radio-button-click-target’, “Pascal’s law”)
Principle of floatation
None
Stress is defined as
Stress = Force/ Area
Stress = Area/Force
Stress = Area/ Volume
Stress = Mass/ Volume
A minor but sudden fall in atmospheric pressure is followed by
a storm and a rain
an intense weather
a pleasant weather
a poor weather
Where there is no air the atmospheric pressure is:
Zero
101300 Pa
7 nm Hg
1000 Nm-2
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