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Physics General Science Test Medium Mode MCQs With Answers
Question # 1
If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is
Choose an answer
360 m/s
306 m/s
331 m/s
340 ms
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Question # 2
The instantaneous velocity of a body moving along a circle is directed
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along the radius
along the tangent
away from the circle
none of them
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Question # 3
Which of the following types of force can do no work on the particle on which it acts
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Frictional force
Gravitational force
Electric force
Centripetal force
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Question # 4
First law of thermodynamics tells us that heat energy can be converted into equivalent amount of work, but it is silent about
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how heat is absorbed
how heat extracted
how this conversion takes place
none of them
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Question # 5
Origin of the electric and the gravitational forces
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Was known in 1911 A.D.
Was known in 1811 A.D.
Was known in 1711 A.D.
is still unknown
Was known in 1611 A.D.
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Question # 6
In a transistor, the central region is called
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collector
emitter
base
none of them
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Question # 7
Branch of physics which deals with the study of stars and galaxies is called:
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Solid state physics
Astrophysics
Molecular physics
Chemical physics
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Question # 8
Moment of inertia depends upon:
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Mass
Selection of axis of rotation
Both of them
None of these
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Question # 9
Hotness and coldness of an object is represented in terms:
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Heat
Temperature
Chemical energy
None of these
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Question # 10
An angle of 180
° in circular motion is equivalent to ______ in SHM.
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Half the vibration
One vibration
3/4th of a vibration
None of these
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Question # 11
Rutherford performed an experiment on nuclear reactions in:
Choose an answer
1718 A.D
1818 A.D
1918 A.D
2001 A.D.
1701 A.D.
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Question # 12
the ratio of mean K.E of chlorine and oxygen molecules at same temperature is
Choose an answer
16 35.5
35.5 16
(35.2)
2
16
1 1
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Question # 13
In a couple, the resultant of two forces is
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2F
F
F / 2
Zero
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Question # 14
If the body changes its velocity uniformly from rest, then the velocity-time graph will be a straight line
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parallel to time-axis
parallel to velocity axis
inclined to time axis
inclined to velocity-axis
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Question # 15
Microwaves are used because they travel in a
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Narrow beam
Straight line
Easily pass through Earth atmosphere
All of these
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Question # 16
Examples of first law of thermodynamics
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Working of bicycle pump
Human metabolism
Brakes applied by an auto mobile
All of these
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Question # 17
Due to dispersion effects, white light source is useful for
Choose an answer
Long distance
Short distance
Very long distances
None of these
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Question # 18
Which of the particles, electron, proton and neutron moving with same speed has longest wave length?
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Electron
Proton
Neutron
All have same
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Question # 19
To observe the phenomenon of interference of light, the light should be
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Monochromatic
Phase coherence
Coherent sources
All of these
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Question # 20
A mental wire is stretched by suspending weight to if x is the longitudinal strain and y is young s modulus of elasticity then the elastic potential energy per unit volume is
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1/2 y x
2
x
2
/ 2y
y
2
/ 2x
x
2
/ 2y
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Question # 21
The law of thermodynamics which discusses the condition under which heat energy is converted into and equivalent amount of work is:
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1st
2nd
3rd
None of these
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Question # 22
If V denotes volume of the liquid coming out of a pipe per second, v is velocity and A as area of the pipe, then the correct formula will be:
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V = v x A
v = V x A
A = v x V
None of these
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