More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
PPSC Physics Full Book MCQs With Answers
Question # 1
The specific heat of all gases increases with temperature at high temperature decreases at low temperature expectation is
Choose an answer
Oxygen gas
Nitrogen gas
Mono atomic gas
Dia atomic gas
Previous
Skip
Next
Question # 2
A part of electromagnetic spectrum that can be detected by the human aye
Choose an answer
Angle of incidence
Angle of refraction
Light
Angle of reflection
Previous
Skip
Next
Question # 3
Base current of a transistor is 1 mA and collector current is 99 mA What is emitter current.
Choose an answer
1 mA
100 mA
98 mA
110 mA
Previous
Skip
Next
Question # 4
Mostly widely used types of gas LASER are.
Choose an answer
Neon
Argon ion
Helium
All of these
Previous
Skip
Next
Question # 5
The ratio of average induced emf to the rate of changing of current in the coil is called.
Choose an answer
Self induction
Mutual induction
Self inductance
Mutual inductance
Previous
Skip
Next
Question # 6
What is the energy equivalent to amu in Me V
Choose an answer
0.931 MeV
9.31 MeV
93.1 MeV
931 MeV
Previous
Skip
Next
Question # 7
The weight of a man in an elevator moving down with an accelerating of 9.8 m s-2 will be come
Choose an answer
Half
Zero
9.8 N
Double
Previous
Skip
Next
Question # 8
Which animal did Erwin Schrodinger contemplate using in his famous thought experiment.
Choose an answer
mouse
Cat
Dog
Rabbit
Previous
Skip
Next
Question # 9
The power of convex lens is 10 d. At what distance the 3 times larger image is formed.
Choose an answer
9.6 cm
2.3 cm
13.3 cm
17.6 cm
Previous
Skip
Next
Question # 10
If we double both the current and the voltage in circuit while keeping its resistance constant the power.
Choose an answer
Remains unchanged
Halves
Doubles
quadruples
Previous
Skip
Next
Question # 11
According to Gauss's law the number of electric field lines crossing any closed surface is.
Choose an answer
numerically equal to the enclosed charge
Equal to the enclosed positive charge
Equal to teh electric field inside the surface
Equal to the charge density on the surface.
Previous
Skip
Next
Question # 12
What does a dynamo generate
Choose an answer
Electrons
Emf
anion
Cation
Previous
Skip
Next
Question # 13
Electromotive force is closely related to.
Choose an answer
Inductance
Magnetic flux density
Potential difference
Electric field intensity
Previous
Skip
Next
Question # 14
What is the part of a simply D.C. motor that reverses the direction of current through the coil every half cycle.
Choose an answer
Armature
Brushes
Commutator
Slip rings
Previous
Skip
Next
Question # 15
The input exultation for a JFET is
Choose an answer
Current signal
Voltage signal
Voltage and current signals
Neither voltage nor current signal
Previous
Skip
Next
Question # 16
As a result of modulation, the resultant wave is called.
Choose an answer
Carrier wave
Modulated carrier wave
Matter wave
Energetic carrier wave
Previous
Skip
Next
Question # 17
The loudness of a sound depend on its
Choose an answer
Frequency
Amplitude
Speed
Both a and b
Previous
Skip
Next
Question # 18
Which particle is removed by a photon.
Choose an answer
Quark
Electron
Proton
Neutron
Previous
Skip
Next
Question # 19
The process of mixing sound waves with carrier waves is known as.
Choose an answer
Rectification
amplification
Modulation
Demodulation
Previous
Skip
Next
Question # 20
The magnitude of the resultant of two forces may be increased by
Choose an answer
Increasing the angle between them
Decreasing the angle between them
Drawing the parallelogram to represent them
Drawing the force perpendicularly
Previous
Skip
Next
Question # 21
The capture of neutron by a proton results in the formation of.
Choose an answer
Deuteron and gama rays
Deuteron and alpha particle
Triton and Beta particles
Tritron and X rays
Previous
Skip
Next
Question # 22
The part of theory of relativity which deals with accelerated bodies is called.
Choose an answer
special theory of relativity
General theory of relativity
Lorentz's theory of relativity
Galilean theory of relativity
Previous
Skip
Next
Question # 23
Which of the following is non renewable source of energy.
Choose an answer
Wind
Coal
Hydroelectric
Biomass
Previous
Skip
Next
Question # 24
Which of the following is not the SI unit of magnetic flux density.
Choose an answer
Wb m2
N A-1 m-1
Tesla
N mA-1
Previous
Skip
Next
Question # 25
Why does a transformer have a core made of iron.
Choose an answer
Iron has a high melting point
Iron is a magnetic material
Iron potential and high current
Iron is a conductor of electricity
Previous
Skip
Next
Question # 26
The maximum K.E. with which photoelectrons are emitted depends very strongly on the.
Choose an answer
Intensity of incident light
Electric field near the photocathode
Frequency of incident light
Polarization of incident light
Previous
Skip
Next
Question # 27
Arthur Holly Compton was awarded Nobel prize in.
Choose an answer
1923
1927
1931
1934
Previous
Skip
Next
Question # 28
A ball mass 0.25 kg is thrown to a height of 20 m The change in G.P.E is
Choose an answer
49 J
50 J
-75 J
500 J
Previous
Skip
Next
Question # 29
An object of placed at the centre of curvature of a concave mirror The image produced by the mirror is located.
Choose an answer
Out beyond the centre of curvature
At the centre of curvature
Between the centre of curvature and the focal point
At the focal point
Previous
Skip
Next
Question # 30
Since a diode permits the flow of current only in one direction so it can be used as.
Choose an answer
An oscillator
A rectifier
A phot deflector
A transistor
Previous
Skip
Next
Question # 31
The half life of a radioactive substance depend on.
Choose an answer
Pressure
Temperature
Amount of substance
No external influences
Previous
Skip
Next
Back