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Physics General Science Test Medium Mode MCQs With Answers
Question # 1
The induced current in the loop can be increased by:
Choose an answer
Using a strong magnetic field
Moving the loop faster
Replacing the loop by a coil of many turns
All of above
None of these
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Question # 2
On the compression stroke of the petrol engine, the inlet value is closed and the mixture is compressed
Choose an answer
adiabatically
isothermally
isochorcally
isobarically
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Question # 3
The pattern of NaCl particles have a shape which is :
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Cubic
Body centred cubic
Simple cubic
face centred
Both (A) and (C)
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Question # 4
When a dielectric material is introduced between the plates of a charged condenser the electric field between the plates
Choose an answer
Decreases
Increases
No change
May increase or decresase
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Question # 5
Units of impedance are
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Henry
Ohms
moh
Watt
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Question # 6
The commercial unit of electrical energy is :
Choose an answer
K Watt
KWH
Horse power
Joule
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Question # 7
A metal road of length 1m is moving at a speed of 1 ms
-1
In a direction making angle of 30
ยบ with 0.5 Y magnetic field. The emf produced in the rod is:
Choose an answer
0.25 N
0.25 V
2.5 V
2.5 N
25 V
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Question # 8
The torque per unit twist of coil is called
Choose an answer
proportionality constant
gravitational constant
boltzman constant
coupling constant
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Question # 9
An example of photoconductor is:
Choose an answer
Boron
Carbon
Iron
Aluminum
Selenium
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Question # 10
Fraction of the decaying atoms per unit time is called
Choose an answer
decay atom
decay element
decay constant
decay
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Question # 11
According to kinetic theory of gases, molecules of a gas behave like
Choose an answer
Inelastic spheres
Perfectly elastic rigid sphere
Perfectly elastic non-rigid spheres
Inelastic non-rigid spheres
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Question # 12
Huygen's wave theory of light cannot explain
Choose an answer
Diffraction
Interference
Polarization
Photoelectric effect
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Question # 13
The deformation measured in terms of some twisting angle due to action of stress is known as
Choose an answer
Stress
Linear stress
Compressive stress
Shear stress
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Question # 14
The positions of two aeroplanes at any instant are at A (2, 3, 4) and B(5, 6, 7) from the origin in km. Find the distance between the two aeroplanes.
Choose an answer
3.2 Km
4.9 Km
5.0 Km
5.2 Km
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Question # 15
The total internal reflection takes place for glass-air boundary is then the angle is
Choose an answer
Equal to 41.8
o
Greater than 41.8
o
Less than 41.8
o
None of these
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Question # 16
The typical speed of reconnaissance jet (SR-71) is
Choose an answer
900 ms
-1
950 ms
-1
980 ms
-1
990 ms
-1
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Question # 17
Wavelength of light, on the average, is given by
Choose an answer
10
-14
m
10
-10
m
10
-6
m
10
-4
m
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Question # 18
All real heat engines are less efficient than carnot engine due to
Choose an answer
Work substances
Friction
0 K
All of these
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Question # 19
A highly irreversible process is
Choose an answer
Expansion
Explosion
Compression
None of these
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Question # 20
Which of the following is the only vector quantity
Choose an answer
Temperature
Energy
Power
Momentum
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Question # 21
In Huygen's wave theory the locus of all points in the same state of vibration is called
Choose an answer
A half-period zone
Vibrator
Wave front
A ray
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Question # 22
Coin of radius R is beaten uniform to make a disc of radius 2R.Its moment of inertia.
Choose an answer
Decreases
Increases
Remains the same
Decreases or increases depending on the actual value
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