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PPSC Physics Full Book MCQs With Answers
Question # 1
A force of 50 N acts on a body for 10 s What will be change in momentum.
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5 Ns
500 Ns
200 Ns
800 N s
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Question # 2
Which of the following quantities is analogous to mass in electricty.
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Charge
Potential
Capacitance
Inductance
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Question # 3
Colour of light is determined by its
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Amplitude
Velocity in air
Wavelength
State of polarization
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Question # 4
The SI unit of decay constant is.
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m
m-1
s-1
N m-1
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Question # 5
Which of the following is a clinical thermometer.
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Gas thermometer
Mercury thermometer
Alcohol thermometer
Radiation thermometer
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Question # 6
A diode cn be used as
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Amplifier
Rectifier
Oscillator
Transistor
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Question # 7
Alternating current generator consists of a coil and a pair of.
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Split rings
Slip rings
Metal rings
Copper rings
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Question # 8
Which material has the larges resistivity.
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Silver
Germinium
Amber
Sulphur
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Question # 9
The variation in the speed of sound with temperature is greater in.
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Gases
Metals
Liquids
Insulators
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Question # 10
Which of the following quantity is defined in terms of the rate of change of electric displacement field.
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Conventional current
Electronic current
Displacement current
Pulsating current
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Question # 11
If length of second pendulum becomes four times than its time period will become
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Two times
Four times
Six times
Eight times
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Question # 12
When an arrow is shot from a bow, it has K.E. which is given to it by
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The elongated tail
The stretched string of bow
The throw of archer
The sharp arrows head
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Question # 13
Intensity of the dark bands in interference pattern becomes zero when two waves.
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Of light are monochromatic
Are of the same frequency
Are of the same amplitude
Travel in opposite direction
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Question # 14
A bat while flying determines the location and nature of object in his way by sending.
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Infrasonic waves
Ultrasonic waves
Supersonic waves
Ultraviolet waves
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Question # 15
Both xenon and cesium each have
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24 isotopes
28 isotopes
32 isotopes
36 isotopes
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Question # 16
It is deduced that a piece of metal is already a magnet if
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A copper wire is attracted to it
A copper wire is repelled by it
One end of a compass is repelled by it
Both ends of a compass needle are attracted to it.
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Question # 17
Air bubble in water shines because of
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Reflection
Refraction
Diffraction
Total internal reflection
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Question # 18
In an ideal case, when no K.E. is lost the collision is.
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Perfectly elastic
Perfectly inelastic
May or may not be elastic
May or may not be inelastic
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Question # 19
The value of electric field intensity is.
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Volt
Coulomb
Newton
Newton coulomb
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Question # 20
Refraction contributes to the formation of.
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Rainbows only
Mirages only
Echo
Rainbows and mirages
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Question # 21
Which was the transparent front part of the eye that covers the pupil, iris and interior chamber.
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Cornea
Fovea
Sclera
Choroid
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Question # 22
The viscosity of an ideal fluid is
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Infinity
Unity
Zero
0.5
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Question # 23
The minimum angle of incidence for which total internal reflection can occur is called.
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Right angle
Acute angle
Critical angle
Obtuse angle
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Question # 24
A bi convex lens of a material of refractive index 1.5 has the radius of curvature of each side equal to 50 cm the power of the lens will be.
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0.5 dipotre
1.0 dioptre
1.5 diopter
2.0dioptre
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Question # 25
Since a diode permits the flow of current only in one direction so it can be used as.
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An oscillator
A rectifier
A phot deflector
A transistor
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Question # 26
Interference fringe spacing depends on
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The wavelength of light used
The distance screen from the coherent sources
Separation between the sources
All of the above
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Question # 27
Real gases obey gas laws only at
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Low pressure and high temperature
High pressure and low temperature
High pressure and high temperature
Low pressure and low temperature
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Question # 28
Which law states that two given samples of an ideal gas at the same temperature pressure and volume contain the same number of molecules.
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Charles law
Avogadro's
Boyles law
Boizmann law
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Question # 29
Fluid mechanics is the study of how fluid move and the other ting involved is
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Energy
Velocity
Forces
Position
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Question # 30
The design of an airfoil uses
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Archimedes principle
Bernouli's principle
Pascal law
Hooke's law
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Question # 31
Specially designed solid state detector can be used to detect.
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Alpha particles
Beta particles
Gama rays
X- rays
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