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MDCAT Physics Online Test MCQs With Answers
Question # 1
A thief stole a box with valuable article of weight W and jumped down a wall of height h.Before he reached ground he experienced a load of
Choose an answer
2W
W
W/2
Zero
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Question # 2
Albert Einstein got the Nobel prize in physics for his explanation of photoelectric effect in
Choose an answer
1916
1919
1921
1923
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Question # 3
Insulators are those material in which energy gap is
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very large (several eV)
very narrow (= 1ev)
either of them
none of them
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Question # 4
A gas STP is slowly compressed to one fourth of its original volume, then final pressure is
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4 atmosphere
0.75 atmosphere
8 atmosphere
0.25 atmosphere
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Question # 5
The SI unit gravitational potential is
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Joule/Kg
Kg/joule
Joulex/Kg
Joulex/Kg
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Question # 6
When lorentz force on a charged particle become zero then the speed of charged particle is given by
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v = E/B
v = EB
v = E + B
v = qEB
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Question # 7
To diagnose the disease of eye we use
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Solid laser
Carbon laser
Glass laser
He-Ne laser
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Question # 8
The total energy of the bound constituents in the nucleus is:
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Less than when they are free particles
Greater than when they are free particles
The same as when they are free particles
Much greater than when they are free particles
Infinite
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Question # 9
If two waves of length 50 cm and 51 cm produced 12 beats per second the velocity of sound is
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360 m/s
306 m/s
331 m/s
340 m/s
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Question # 10
In order to hear the echo of a sound the minimum distance between the listener and the obstacle must be (velocity of sound 332 ms
-1
)
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About 33 m
About 17 m
About 9.5 m
About 8.5 m
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Question # 11
When OP-AMP is used as inverting amplifier, which of the input terminal is grounded?
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inverting
non-inverting
any one of them
none of them
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Question # 12
In pure inductor, the power dissipation is
Choose an answer
Maximum
Minimum
Zero
None of these
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Question # 13
Thick tar and honey have
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Small coefficient of viscosities
Large coefficient of viscosities
Zero coefficient of viscosities
Moderate coefficient of viscosities
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Question # 14
The magnetic moment of electron is
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9.27 x 10
-24
joule/Tesla
9.27 x 10
-24
Tesla/joule
9.27 x 10
-23
joule/Tesla
9.27 x 10
-23
Tesla/joule
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Question # 15
Acceleration produced in a body by a force varies
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inversely as the applied force
directly as the mass of the object
directly as the mass of the body
none of them
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Question # 16
Find the distance through which the mass must be pulled down and then released with a velocity of 1.0 ms
-1
and given that ω = 8.94 s
-1
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0.12 m
.011 m
0.10 m
0.09 m
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Question # 17
The sink in the heat engine is at
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Low temperature
High temperature
Zero temperature
None of these
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Question # 18
In YDS experiment, if the distance between the slits and also the distance between slits and screen is doubled, the fringe width
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Becomes doubled
Becomes 4 times
Is halved
Remains the same
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Question # 19
A potentiometer circuit gives continuously varying
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Charge
Capacitance
Potential difference
Inductance
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Question # 20
The solid state detector is specially designed device used for
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α-particles
β-particles
γ-rays
None of these
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Question # 21
A uniform beam of weight 100 N is 4 m long and is supported 1.0 m from one end. A load of weight wN hangs from that ened and the beam is in equilibrium.What is the value of w?
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50 N
75 N
100 N
200 N
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Question # 22
Which of the following phenomenon is not application of Bernoulli s equation
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Swing in cricket ball
Flying of airplane
Working of carbonator
Beats
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Question # 23
The chemical which damage the Ozone layer in the atmosphere is
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Benzene
Chlorofluorocarbons (CFC)
Alcohol
None of these
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Question # 24
Marie Curie and pierre Curie discovered two new radioactive elements which
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Uranium and polonium
Polonium and Radium
Radium and Uranium
Uranium and plutonium
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Question # 25
The time taken by an AC of frequency 50 Hz to complete one cycle will be
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2 second
0.2 second
0.02 second
0.1 second
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Question # 26
Electric force is the force which is experienced by a positive charge to produce
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Displacement
Work
Attraction
None of these
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Question # 27
The proper time measured in
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Inertial frame
Non-inertial frame
Stationary frame
None of these
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Question # 28
The term drift velocity is used when the ends of a wire are:
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Connected to a lesser source
Connected to a voltage source
Not connected to a voltage source
At different values of potential
Both B and D
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Question # 29
The formula for the velocity of sound is
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Question # 30
According to Einstein, with the great increase in the speed of the body the relativistic length of the body
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remains constant
decreases
increases
reduces to zero
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Question # 31
Force of friction between different layers in present in
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Gases
Solids
Liquids
Both A and C
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Question # 32
X-rays are affected by:
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electric field
magnetic field
Both a & b
None of these
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Question # 33
The viscosity of liquid is due to
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Adhesive force
Cohesive force
Gravitational force
Diffusion
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Question # 34
The cross product of two perpendicular vectors has magnitude
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Maximum value
Minimum value
Zero
None of these
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Question # 35
In which process the P - V diagram is a straight line parallel to volume axis
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Isobaric
Isothermal
Isochoric
Adiabatic
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Question # 36
The energy of theγ-rays more than 1.02 Me V the dominant process is
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Compton effect
Pair production
Photo electric effect
None of these
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Question # 37
Heat is a form of
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Power
Work
Energy
Motion
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Question # 38
The fiber of which refractive index ______ gradually as move from central core to its periphery is called ______ index fiber
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Decreases, multi-mode graded
Increases, single mode step
Either of A or B
Increases, multi-mode step
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Question # 39
The resistivity of silver is
Choose an answer
1.59 x 10
-3
Ωm
1.52 x 10
-8
Ωm
100 x 10
-8
Ωm
0.5
Ωm
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Question # 40
Why do real gases deviate from ideal bahaviour?
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Real gases consist of a very small number of molecules within a given volume
Real gasses have intermolecular forces
Molecules of real gases are not in rapid, random motion
None of them
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Question # 41
A ballistic missile is
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Unpowered
Unguided
Both
None of these
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