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Physics General Science Test Medium Mode MCQs With Answers
Question # 1
A motorist travels A to B at a speed at 40 km/h and returns at speed of 60km/h. His average speed will be
Choose an answer
40 km/h
48 km/h
50 km/h
60 km/h
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Question # 2
Different radioactive material have
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same half lives
different half lives
same mean lives
same total lives
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Question # 3
Recent studies of ferromagnetism have shown that there exists in ferromagnetic substances small regions called
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tiny regions
domains
vectors
none of them
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Question # 4
Referring to above figure, due to change in current in the coil P, the change in magnetic flux
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Is associated with coil P
Is associated with coil S
Causes and induced current in coil S
All of these
None of these
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Question # 5
The total work done in moving the body up and then down through the same height in a gravitational field is equal to:
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mgh
Its wight
Weight X height
Zero
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Question # 6
When a person jumps off the ground, the reaction force of the ground is
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greater than the weight of the person
smaller than the weight of the person
equal to the weight of the person
zero
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Question # 7
Sadi carnot described an ideal heat engine in
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1820
1840
1860
1880
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Question # 8
If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be
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Increasing by a factor of 2
Decreasing by a factor of 2
Decreasing by a factor of 4
Unchanged
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Question # 9
The example of reversible process is
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an explosion
changes occur suddenly
slow compression of a gas
all of them
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Question # 10
In a transistor, the central region is called
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collector
emitter
base
none of them
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Question # 11
'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?
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0
1
0.5
-1
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Question # 12
Davisson and Germer, in their experiment used:
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Nickle crystal
Lead crystal
Graphite crystal
Glass
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Question # 13
A cylinder cannot roll on
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A rough horizontal plane
A smooth horizontal plane
A rough inclined plane
A smooth inclined plane
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Question # 14
The dimensions [MLT
-1
] refers to the quantity
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Force
Momentum
Impulse
None of these
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Question # 15
Water is filled up to a height 'H' in a tank.A hole is made at depth 'h' below the water level.The velocity of efflux of the fluid is
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2gh
gh
√2gh
√gh
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Question # 16
Salters duck is consists of
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Duck float
Body float
Balance float
a and c
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Question # 17
A human eye can detect the electromagnetic radiations of the type:
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Infrared radiations
For- infrared radiations
X-rays radiations
Red radiations
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Question # 18
To wavelength of light by his experiment , Newton utilized:
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Wavelength of light
Intensity of light
amplitude wave
None of above
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Question # 19
Interference and diffraction of light confirms its:
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Particle nature
Dual nature
Wave nature
Electromagnetic nature
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Question # 20
One a clear day at noon, the intensity of the solar energy reaching the Earth surface is about
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1 KWm
-1
2 KWm
-2
3 KWm
-2
None of these
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Question # 21
The atoms or molecules in a crystalline solid are held together by
Choose an answer
Attractive force
Gravitational force
Cohesive force
Electromagnetic force
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Question # 22
The dimensional formula for modulus of rigidity is:
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ML
-1
T
1
ML
-2
T
2
MLT
1
ML
-1
T
-2
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