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Physics General Science Test Medium Mode MCQs With Answers
Question # 1
The minimum charge on any object can not be less than
Choose an answer
1.6 x 10
-19
C
3.2 x 10
-19
C
1.0 C
4.8 x 10
-19
C
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Question # 2
A coil of constant area is placed in a constant magnetic field. An induced current is produced in the coil when
Choose an answer
The coil is distorted
The coil is rotated
The coil is neither distorted nor rotated
Both A and B
None of these
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Question # 3
The resistance of a conductor does not depend on its
Choose an answer
mass
resistivity
length
cross-sectional area
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Question # 4
The square of 0.4 is:
Choose an answer
Greater than 0.4
Smaller than 0.4
Equal to 0.4
None of them
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Question # 5
The stopping voltage for a certain metal is 100 volts, then the work function for the cathode plate is
Choose an answer
100 J
1.6 x 10
-17
J
100 eV
1.6 x 10
-17
eV
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Question # 6
In case of metallic conductors, the charge carriers are
Choose an answer
Protons
Electrons
Antiprotons
Positrons
Both A and B
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Question # 7
Resistance of a conductor depends upon
Choose an answer
the quantity of current passing through it
the voltage applied between its end
its dimensions, physical state and nature of its material
all of the above
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Question # 8
The molecules or ions in a crystalline solids are
Choose an answer
static
not static
randomly moving
all of them
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Question # 9
A body is moving with constant velocity of 10 m/sec in the north-east direction. Then its acceleration will be:
Choose an answer
10 m/sec
2
20 m/sec
2
30 m/sec
2
Zero
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Question # 10
The magnetic field inside a solenoid can be increased by:
Choose an answer
Increasing n
Decreasing I
Increasing I
By using iron core within solenoid
All correct except (B)
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Question # 11
The efficiency of carnot engine cannot be 100% or one unless cold reservoir is at
Choose an answer
100 K
273 K
0 K
-273 K
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Question # 12
The force of friction that comes into action after the motion has started is called
Choose an answer
Limiting friction
Static friction
Friction
None of these
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Question # 13
If the acceleration due to gravity at the earth's surface is 9.8 m/s
2
and the mass of the earth is 80 times that of moon and radius of earth 4 times that of moon,the value of G at the moos's surface will be:
Choose an answer
9.8 m/s
2
1.96 m/s
2
4.9 m/s
2
None of above
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Question # 14
The magnifying power of an instrument is expressed in
Choose an answer
Radians
Degrees
No units
None of these
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Question # 15
For obtaining equal and same height mirror should be
Choose an answer
Convex
Concave
Plane
None
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Question # 16
The atoms molecules or ions in a crystalline solids are at room temperature
Choose an answer
Motionless
Vibrate violently
Fixed
Simply vibrate
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Question # 17
The SI units of acceleration is
Choose an answer
LT
LT
-1
LT
-2
L
2
T
-2
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Question # 18
Frequency of red colour as compared to that of violet colour is:
Choose an answer
Equal
Smaller
Greater
None of these
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Question # 19
When a silicon crystal is doped with a trivalent element, then the atom of the trivalent element is known as
Choose an answer
acceptor
donor
either of them
none of them
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Question # 20
What remains constant in the field of central force?
Choose an answer
Potential energy
Kinetic energy
Angular momentum
Linear momentum
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Question # 21
Stoke's Law holds for bodies having
Choose an answer
Elliptical shape
Spherical shape
Curved shape
None
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Question # 22
If focal length of objective is increased
Choose an answer
Magnifying power of compound microscope decreased
Magnifying power of astronomical telescope increases
The diameter of the objective lens
None of these
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