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Physics General Science Test Medium Mode MCQs With Answers
Question # 1
Synthetic materials fall into the category of
Choose an answer
crystalline solids
amorphous
polymeric solids
all of them
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Question # 2
The ohm's is defined as
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1 ampere / 1 volts
1 coulomb / 1 volt
1 volt / 1 ampere
1 volt / 1 coulomb
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Question # 3
An LED emits light when it is:
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Forward biased
Reverse biased
Operated without battery
Operated with heat source
None of these
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Question # 4
When a constant potential difference is applied across the conductor, the drift velocity of electrons:
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Increases
Decreases
Remains the constant
Either of these
None of these
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Question # 5
The value of the Stephen's constant for black body radiations is given by
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5.6 x 10
8
Wm
-2
K
-4
5.67 x 10
-8
Wm
-2
K
-4
2.9 x 10
-3
mK
2.9 x 10
3
mK
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Question # 6
Carnot heat engine only used
Choose an answer
isothermal processes
adiabatic processes
both of them
none of them
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Question # 7
The device which allows only the flow of an A.C. through a circuit is
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Capacitor
Inductor
D.C. motor
Battery
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Question # 8
An ideal voltmeter has:
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Zero resistance
Small resistance
Large resistance
Infinite resistance
Both A and B
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Question # 9
There is no net transfer of energy by particle of medium in
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Longitudinal wave
Transverse wave
Progressive wave
Stationary wave
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Question # 10
Electromagnetic waves transport:
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Energy only
Momentum only
Both A and B are correct
None of is correct
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Question # 11
Rate of decay is actually described by.
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Half line
Decay constant
Mean life
Total life
None of these
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Question # 12
When milk is churned,cream separates because of
Choose an answer
Gravitational force
Centrifugal force
Frictional force
None of these
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Question # 13
The forces which forms a couple
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Can be replaced by a single equivalent force
cannot be replaced by a single equivalent force
Are perpendicular to each other
All of these
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Question # 14
An optical instrument used to see very far off objects is called
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Telescope
Camera lens
Microscope
Spectrometer
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Question # 15
The speed of the secondary wavelets as mentioned in Huygen's principle is ________ the speed of propagation of the wave itself
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Equal to
Greater than
Smaller than
None of these
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Question # 16
A non-inverting amplifier has infinite input resistance then the voltage gain of noninverting amplifier will be:
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Zero
Infinite
One
100
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Question # 17
If the slits in YDS experiment are made closer, fringe spacing will:
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Increase
Decrease
Remain same
None of above
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Question # 18
Which type of optical fiber has the largest diameter
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Single mode step index fiber
Multi-mode step index fiber
Multi-mode graded index fiber
None of these
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Question # 19
A system may be in equilibrium when
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the resultant force acting on it is zero
the resultant torque on it is zero
the sum of clockwise and anticlockwise moments (taken about the same point) are equal
all of them
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Question # 20
If 'd' 'm' and fringe spacing ΔY are known, the interference effect due to light of λ
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Cannot be determine
Can be determined in same cases
Can be determined
None of these
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Question # 21
The property of bending of light around obstacies is called
Choose an answer
interference
reflection
diffraction
polarization
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Question # 22
If the incident light contains different wavelengths the images of each wavelength for a certain value is diffracted in the
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Same directions
Different direction
Opposite direction
None of these
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