MCQS of Physics for NTS Set 1

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MCQS of Physics for NTS


In which case dose the potential energy decreases?
One moving a body against gravitational force
One the rising of an air bubble in water
On stretching s spring
On compressing a spring

Which of the following four statements is false?
The direction of the velocity of a acceleration is constant
A body can have zero velocity and still be accelerated
A body can have a constant velocity and still have a varying speed
A body can have a constant speed and still have a varying velocity

Ultra-violet radiation of 6.2 eV falls on an aluminium surface K.E of fastest electrons emitted is(work function = 4.2 eV)
9 x 10-32 J
3.2 x 10-19 J
3.2 x 10-21 J
7 x 10-25 J

For production of beats the two sources must have
Different frequencies and same amplitude
Different frequencies same amplitude and same phase
Different frequencies and same phase.
Different frequencies

Which of the following is the only vector quantity
Momentum
Energy
Temperature
Power

The volt/metre is the unit of:
Electric field intensity
Work
Potential
Force

The dot product of two vectors is negative when
None of the above is correct
They are perpendicular vectors
They are parallel vectors
They are anti-parallel vectors

The velocity of falling raindrops attains limited value because of
VIscous force exerted by air
Up thrust of air
Air currents atmosphere
Surface tension effect

According to Stoke’s law drag force depends on
Instantaneous velocity
Terminal velocity
Final velocity
Initial velocity

A person standing on a rotating platform has his hands lowered He suddenly outstretches his arms.The angular momentum
Increases
Remains the same
Becomes zero
Decreases

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