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Physics General Science Test Medium Mode MCQs With Answers
Question # 1
When a silicon crystal is doped with a pentavalent element, such an extrinsic semi-conductor is called
Choose an answer
p-type semi-conductor
n-type semi-conductor
either of them
none of them
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Question # 2
Which of the following is scalar quantity?
Choose an answer
Electric potential
Velocity
Momentum
Force
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Question # 3
The instantaneous velocity of a body moving along a circle is directed
Choose an answer
along the radius
along the tangent
away from the circle
none of them
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Question # 4
Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as
Choose an answer
waves
beat
interference
resonance
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Question # 5
A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, which makes and angle of 60
° with the horizontal. The work done by the boy is:
Choose an answer
1.25 J
12.5 J
125 J
None of these
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Question # 6
The most abundant isotope of neon is
Choose an answer
neon-20
neon-21
neon-22
neon-23
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Question # 7
A dirty carpet is to be cleaned by heating. This is in according with______law of motion.
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First
Second
Third
None of these
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Question # 8
If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be
Choose an answer
6 ohm
4 ohm
zero ohm
1.33 ohm
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Question # 9
The results of spectra obtained by Balmer were expressed in 1896 by:
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Bohr
Rydberg
Planck
Rutherford
Coulomb
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Question # 10
In equation F=ma, then mass 'm' is
Choose an answer
rest mass
variable mass
inertial mass
gravitational mass
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Question # 11
Conventionally the angular velocity is directed at an angle of
Choose an answer
90° to the axis of rotation
30° to the axis of rotation
0° to the axis of rotation
None of the above
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Question # 12
The unit of surface energy per unit area may be expressed as
Choose an answer
Nm
-2
Nm
-1
Nm
Nm
2
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Question # 13
The magnetism produced by electrons within an atom is due to
Choose an answer
Spin motion
Orbital motion
Spin and orbital motion
None of these
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Question # 14
A ______ lens is used in the apparatus to get Newton,s rings
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Plano-concave
Plano-convex
Convexo-concave
Double convex
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Question # 15
The weight of an object is defined as
Choose an answer
the effect of the gravitational field on an object
force acting per unit mass
the gravitational force exerted on that object
the gravitational field exerted on that object
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Question # 16
Moment of inertia of an object does not depend upon
Choose an answer
Mass of object
Mass distribution
Angular velocity
Axis of rotation
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Question # 17
Moment of inertia of a solid disc or cylinder is
Choose an answer
mr
2
1/2 mr
2
1/3 mr
2
1/4 mr
2
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Question # 18
When passes from medium to another, deviate from its path is called
Choose an answer
reflection
refraction
diffraction
transmission
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Question # 19
The charged nucleus of an atom itself spins, it's magnetic field
Choose an answer
equals 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 them
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Question # 20
Two light sources obtained from single source are called
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non-coherent sources
coherent sources
monochromatic sources
spherical sources
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Question # 21
Two positive point charges of 13 and 8 micro coulombs respectively are placed 10 cm apart in air. The work done to bring them 4 cm closer is
Choose an answer
zero
3.8 J
4.8 J
5.8 J
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Question # 22
The centre of gravity of an object is
Choose an answer
The force of gravity on the object
The point about which the object rotates
The point at which the total weight of the object act
none of these
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