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PPSC Physics Full Book MCQs With Answers
Question # 1
Which scientist announced for the first time that the universe is expanding.
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Einstein
Newton
Edward Hubble
Karl Marx
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Question # 2
The near point of a person is 50 cm and his far point is 200 cm The power of the lenses which his spectacles should have for reading will be
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+D
+2D
+4D
-2D
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Question # 3
If emf of the battery in a thermocouple is doubled, what is the rate of heat generation at one function.
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Remains unchanged
Becomes half
Become double
Becomes 4 times
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Question # 4
Which of the following quantities is analogous to mass in electricty.
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Charge
Potential
Capacitance
Inductance
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Question # 5
A water wave is an example of
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Electromagnetic wave
Longitudinal wave
Transverse wave
Reverberation
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Question # 6
Radioactive substances do not emit
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Alpha particles
Beta particles
Gama rays
Neutrons
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Question # 7
During the alpha decay process
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A neutron is emitted
a electron is emitted
A helium core is emitted
A proton core is emitted
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Question # 8
A light beam is said to be plane polarized when
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its vibrations are restricted to only one plane
Its vibrations are very strong in one plane
Its vibrations take place in any plane
Its vibrations are very weak in one plane
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Question # 9
Crystalline solids are of.
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Short range order
Long range order
Intermediate range
Plastics
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Question # 10
What is term for tendency of a system to oscillate with larger amplitude at some frequencies than at others.
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Resonance
Impedance
Inductance
Capacitance
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Question # 11
What is the direction of the magnetic field lines inside a bar magnet.
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From north pole to south pole
From south pole to north pole
From side to side
There are no magnetic field lines
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Question # 12
The material of an electromagnet should have high
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Permeability
susceptibility
Retentivity
Hysteresis loss
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Question # 13
The most convenient unit for energy at the atomic level is.
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Joule
Watt second
Newton metre
Electron volt
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Question # 14
A body is thrown vertically upward with initial velocity 9.8 ms-1 it will reach the height.
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4.9 m
19.9 m
29.4 m
49.2 m
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Question # 15
The half life of a radioactive element depends upon.
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Temperature
pressure
nature of element
quantity of the element
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Question # 16
On which temperature scale a degree is 1/180 of the interval between the freezing point and the boiling point.
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Celsius scale
Fahrenheit scales
Rankine scale
Kelvin scale
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Question # 17
Transformer make possible the
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transmission of A.C. power
conversion of AC and D.C
Cyclotron
Particle accelerator
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Question # 18
In a parallel resonant circuit, at resonance
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Current is maximum
Voltage is maximum
Impedance is minimum
Impedance is zero
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Question # 19
The centre of mass of a system is a point where an applied force causes the system to move.
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With rotation
Without rotation
Fastly
Slowly
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Question # 20
Which one of the following instruments has the maximum resistance.
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Ammeter
Voltmeter
Micro ammeter
Milli ammeter
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Question # 21
If the base emitter junction is forward biased and base collector junction is reverse biased the BJT is in.
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cut of mode
Amplification mode
Saturation mode
Inversion mode
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Question # 22
The electric current can be defined by its
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Chemical effect
Magnetic effect
Heating effect
All of these
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Question # 23
When damping is small amplitude of vibrational resonance will be
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small
Large
Infinite
Un changed
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Question # 24
Prince Louis and Vector de broglie received the Nobel prize in.
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1919
1923
1927
1929
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Question # 25
Which of the following is believed to be carrier o nuclear forces.
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Lepton
Meson
Bason
Baryon
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Question # 26
When a body is taken out of the earth's gravitational field, the P.E. with respect to earth is
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Zero
Minimum
Maximum
geothermal
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Question # 27
Electromagnetic wave theory was proposed by
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Maxwell
Hertz
Fizeace
Huygen
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Question # 28
The wavelength of Pascha series lies is the
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Visible region
Ultraviolet region
Infrared region
Invisible region
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Question # 29
Push pull amplifiers employ
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One transistor
Two transistors
Three transistors
Four transistors
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Question # 30
Who described an ideal heat engine in 1840
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Boyle
Saadi Carnot
Kelvin
Currie
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Question # 31
The chain reaction is controlled by a series of rods usually made of.
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uranium
Cadimium
Boron
Steel
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