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Physics General Science Test Medium Mode MCQs With Answers
Question # 1
The smallest three dimensional basic structure in a crystalline solid is called
Choose an answer
lattice point
crystal lattice
cubic crystal
unit cell
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Question # 2
Field lines are closer to each other in the region where the filed is
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Stronger
Weaker
Much weaker
Absent
None of these
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Question # 3
The sum of positive and negative peak values is called:
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Instantaneous value
Peak value
Rms valuie
Peak-to peak-value
None of these
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Question # 4
In order to produce pair production, a photon must have a energy
Choose an answer
0.511 Me v
0.256 Me v
1.02 Me v
0.956 Me v
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Question # 5
When a vector is multiplied by a negative number, its direction:
Choose an answer
Remains the same
Changes
Changes by 180
°
None of these
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Question # 6
The instantaneous acceleration of a body moving with constant speed in a circle:
Choose an answer
Remains constant
Is called centripetal acceleration
Tangential acceleration
None of these
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Question # 7
The bicycle pump provides a good example of
Choose an answer
first law of thermodynamics
second law of thermodynamics
third law of thermodynamics
none of them
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Question # 8
The induced current in the loop can be Increased by
Choose an answer
Using a stronger magnetic field
Moving the loop faster
Replacing the loop by a coil of many turns
All above
Both A and B
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Question # 9
The SI unit of magnetic flux is.
Choose an answer
weber
Nm
-1
A
-1
tesla
gauss
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Question # 10
In the formula R = N x m for diffraction grating, N denotes:
Choose an answer
No. of lines/cm
No. of lines/meter
Total number of lines
None of above
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Question # 11
The expression for restoring force is
Choose an answer
F=ma
F=kx
F= -kx
Kx=ma
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Question # 12
Uniform electric field can be mapped with electric field lines which are
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Parallel
Equally spaced
Parallel and equally spaced
None
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Question # 13
A pendulum bob is suspended inside a lift moving upward with constant velocity.If mass of the bob is 50 g then its weight inside the compartment is
Choose an answer
Zero
0.1 N
0.5 N
0.05 N
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Question # 14
Measurement of a standard metre in terms of the wavelength of red cadmium light is
Choose an answer
1,563,163.5
1,553,363.5
155,553.5
1,553,163.5
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Question # 15
The SI unit of stress is same as that of
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Momentum
Pressure
Force
Length
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Question # 16
Earth is considered to be
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a non-inertial frame
an inertial frame
an accelerated frame
none of the above
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Question # 17
Under a constant torque,the angular momentum of a body changes from A to 4A second find the torque.
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(3/4)A
(1/4)A
3A
(4/3)A
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Question # 18
Which of the following cannot be polarized?
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x-rays
light rays
sound waves
ultraviolet rays
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Question # 19
For assessment of total uncertainty when added or subtracted the absolute uncertainties are
Choose an answer
Multiplied
Divided
Added
Subtracted
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Question # 20
The ballistic missiles are useful only for
Choose an answer
long ranges
short ranges
medium ranges
none of them
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Question # 21
In an inertial frame of reference the weight of body equal to
Choose an answer
Force of attraction
Coulomb's force
Force of gravity
All of these
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Question # 22
If vectors P,Q and R; have magnitude 5,12 and 13 units and P + Q = R the angle between Q and R is
Choose an answer
cos
-1
5/12
cos
-1
5/13
cos
-1
12/13
cos
-1
7/13
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