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Online Tests
Physics General Science Test Medium Mode MCQs With Answers
Question # 1
If speed of electron is 5 x 10
5
m/s. How long does it take one electron to transverse 1 m?
Choose an answer
1 x 10
6
2 x 10
6
2 x 10
5
1 x 10
5
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Question # 2
Improper biasing of a transistor circuit produces
Choose an answer
Heavy loading of emitter current
Distortion in the output signal
Excessive heat at collector terminal
Faulty location of load line
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Question # 3
The space around the earth within which it expects a force of attraction on other bodies is known as:
Choose an answer
Nuclear field
Conservative field
Electric field
Gravitational field
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Question # 4
The perpendicular distance from the axis of rotation to the line of action of force is called:
Choose an answer
Moment arm
Moment of a force
Torque
Non of these
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Question # 5
Photoelectric effect takes place with a photon of:
Choose an answer
Very high energy
Very low energy
Low energy
High energy
None of these
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Question # 6
The charged nucleus of an atom itself spins its magnetic field
Choose an answer
equal to the field produced by orbital electrons
greater than the field produced by orbital electrons
much weaker than the field produced by orbital electrons
none of these
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Question # 7
In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:
Choose an answer
Motion emf
Electrostatic emf
Induced emf
Both A and B
Both A and C
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Question # 8
When the atomic particle are moving with velocities approaching that of light:
Choose an answer
Newton's laws become valid
Relativistic effects become prominent
Botha(A) and (B) are valid
Neither (A)nor (B)
There mass becomes zero.
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Question # 9
An amount of water of mass 20 g at 0
°C is mixed with 40 g of water at 10
°C. Final temperature of mixture is
Choose an answer
-20
°C
6.67
°C
5
°C
0
°C
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Question # 10
Consider a photon of continuous X-ray and a photon of characteristics X-ray of same wavelength. Which of the following is/are different for the two photons
Choose an answer
Frequency
Penetrating power
Energy
Method of creation
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Question # 11
The general theory of relativity treats problems involving
Choose an answer
inertial frame of references
accelerating frame of references
both of these
none of these
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Question # 12
The perpendicular distance form the line of action of force to the pivot point is called
Choose an answer
couple arm
angular distance
moment arm
none of them
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Question # 13
The pair of quantities has same dimensions?
Choose an answer
Power, Work
Work, Torque
Impulse, Linear momentum
Both B and C
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Question # 14
The idea of Michelsion's interferometer is based on the
Choose an answer
reflection of light
interference of light
refraction of light
all of them
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Question # 15
Acceleration of a body is negative if the velocity of the body is
Choose an answer
constant
increasing
decreasing
none of them
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Question # 16
Bulk modulus for aluminium is
Choose an answer
40
70
75
95
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Question # 17
A simple telescope is consists of
Choose an answer
One convex lens
Two convex lenses
Three convex lenses
None of these
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Question # 18
The modulus of elasticity of a liquid is:
Choose an answer
Zero
1
Infinity
A value not one of those mentioned above
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Question # 19
The linear acceleration of the particle of mass m describing a horizontal circle of radius r with angular speed
ω is
Choose an answer
rω
ω/r
rω
2
r
2
ω
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Question # 20
If plane polarized light is incident on the second sheet of Polaroid, the light emitted is full light when their axes are
Choose an answer
Parallel to each other
Perpendicular to each other
In between two positions
None of these
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Question # 21
Bernoulli s equation is the basis of law of conservation of
Choose an answer
Energy
Mass
Charge
Momentum
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Question # 22
A body is floating in a liquid the up thrust on the body is
Choose an answer
Equal to weight of liquid displaced
Zero
Less than the weight of liquid displaced
Weight of body-weight of liquid displaced
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