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PPSC Physics Full Book MCQs With Answers
Question # 1
Artificial polymers are made by a chemicals reaction known as.
Choose an answer
Crystallization
Electroplating
Polymerization
Polarization
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Question # 2
Which of the following should not change in isothermal operation.
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Heat constant
Volume
Pressure
Temperature
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Question # 3
What is the about the electric field inside a metallic sphere.
Choose an answer
It is zero
It varies with the shape of the conductor
It depends on the charge there
It does not charge the metallic sphere
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Question # 4
The magnitude of the resultant of two equal forces is equal to either to the force What is the angle between the two forces
Choose an answer
0
o
120
o
60
o
180
o
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Question # 5
Two stem engine A and B have their sources at 900 K and 600 K and their sinks are at 450 K and 300 K respectively.
Choose an answer
They are equally efficient
A is less efficient than B
a is more efficient than B
Their efficiencies cannot be determined
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Question # 6
Which of the following will not acceleation.
Choose an answer
The moon in its orbit
A tennis ball rebounding from ground
A store in free fall
A car in which the engine thrust is equal to the friction
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Question # 7
The dimensions of torque are.
Choose an answer
[MLT-2]
[ML-1T-1]
[ML2T-2]
[ML-2]
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Question # 8
An inflated tyre suddenly bursts As a result of this temperature of the surrounding
Choose an answer
Increases
Descreases
Remains constant
May increase or decrease
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Question # 9
Which of the following gases has the maximum rms speed at STP.
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O2
H2
N2
CO2
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Question # 10
The venturimeter is an instrument used for measuring the
Choose an answer
Viscosity of a liquid
Flow speed of a liquid
Compressibility of a fluid
Specific gravity of a liquid
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Question # 11
The emission of electrons from a metal surface when exposed to light of suitable frequency is called.
Choose an answer
Pair production
Compton effect
Photo electric effect
Zeeman effect
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Question # 12
At high altitudes, the blood flows out of nose and ear because.
Choose an answer
Blood pressure increase at high altitudes
Percentage of oxygen in the air increase
Atmospheric pressure decreases there
Density of blood decreases of high altitudes
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Question # 13
Which of the following characteristics of a wave is independent of the others.
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speed
Frequency
Amplitude
Wavelength
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Question # 14
To final image produced by a compound microscope is.
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Real and inverted
Real and erect
Virtual and erect
Virtual and inverted
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Question # 15
Who studied the change in velocity with the help of geometry for the first time.
Choose an answer
Nicole Oresme
Galileo
Alberuni
Ibn al haithem
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Question # 16
The total number nucleons in a nucleus are called.
Choose an answer
Mass number
Atomic number
Neutron number
Isotopes
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Question # 17
In which given process does the system always return to the original thermodynamic state.
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Cyclic
Adiabatic
isothermal
Isobaric
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Question # 18
The focal length of a thin converging lens is 10 cm What is the maximum distance from the lens that the object can be placed so that the lens acts as a magnifying glass.
Choose an answer
5 cm
10 cm
15 cm
20 cm
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Question # 19
The process of combining low frequency signals with high frequency radio waves is called.
Choose an answer
Modulation
Resonance
Fluctuation
Amplitude
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Question # 20
The working of cloud chamber is based in the presence of.
Choose an answer
Super heated vapours
Liquid
Super saturated vapors
Unsaturated vapours
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Question # 21
The process of pair production will take place if the energy of photon is greater than.
Choose an answer
0.21 MeV
0.51 MeV
1.51 MeV
1.21 MeV
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Question # 22
Birds planes and boats are streamlined to reduce
Choose an answer
Turbulence
Thrust
Drag
Lift
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Question # 23
Lenses of what diameter are usually not practical.
Choose an answer
Less than 1 m
Larger than 1m
Larger than 5 m
Larger than 10 m
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Question # 24
Which of the following is standard scale of temperature
Choose an answer
Mercury scale
Platinum resistance scale
Gas scale
Alcohol scale
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Question # 25
A body is thrown vertically upward with initial velocity 9.8 ms-1 it will reach the height.
Choose an answer
4.9 m
19.9 m
29.4 m
49.2 m
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Question # 26
If two different masses have same momentum then the lighter one has more.
Choose an answer
K.E. and velocity
Velocity only
Both K.E. and P.E.
Only P.E
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Question # 27
When an arrow is shot from a bow, it has K.E. which is given to it by
Choose an answer
The elongated tail
The stretched string of bow
The throw of archer
The sharp arrows head
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Question # 28
The resistance of a capacitor when it is connected with a battery is.
Choose an answer
Zero
Finite
Infinite
The same
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Question # 29
The first super conductor was discovered by
Choose an answer
Faraday
Lenz
Kamaerlingh Ornes
Oersted
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Question # 30
The locus of all points in the same state of vibrations are known as.
Choose an answer
half period zone
A wavefront
A half wave zone
A full wave zone
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Question # 31
The most familiar example of radioactive dating is.
Choose an answer
Nitrogen dating
Carbon dating
Hydrogen dating
Helium dating
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