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MDCAT Physics Online Test MCQs With Answers
Question # 1
The incorrect statement regarding the lines of force of the magnetic field B is
Choose an answer
Magnetic intensity is a measure of lines of force passing through unit area held normal to it
Magnetic lines of force form a close curve
Inside a magnet,its magnetic lines of force move from north pole of a magnet towards south pole
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Question # 2
The process of liquefaction and evaporation of a substance performed slowly are
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Reversible
Practically reversible
Not reversible
None of these
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Question # 3
The most widely used reactor in the world are
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Fast reactors
Pressurized water reactors
Research reactor
None of these
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Question # 4
In generators, the back motor effect produces due to
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Opposite forces
Parallel forces
Perpendicular forces
None of these
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Question # 5
Which of the following statements for an object in equilibrium not true?
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The object must be at rest
The object can be at rest
The object is moving at constant
The acceleration of the object is zero
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Question # 6
Ductility is the property of a substance in which a material undergoes the deformation as
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Elastic deformation
Plastic deformation
Shear deformation
None of these
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Question # 7
The percentage errors in the measurements of mass and speed are 2% and 3% respectively.How much will be the maximum error in the estimate of the kinetic energy obtained by measuring mass and speed.
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11%
8%
5%
1%
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Question # 8
At low temperature, the body emits long wavelength is the region
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Infra-red
Ultraviolet
Far-Ultraviolet
None of these
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Question # 9
A lift os descending at a constant speed V. A passenger in the lift drops a coin.The acceleration of the coin towards the floor will be
Choose an answer
Zero
g
-g
V + g
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Question # 10
When the pn-junction is forward biased its resistance is of the order of
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few mega ohms
few kilo ohms
few ohms
few mili ohms
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Question # 11
The nature of thermal radiation is smaller to:
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Ultraviolet rays
Light rays
Both of them
None of these
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Question # 12
The value of constant '
γ
' for mono atomic gas is
Choose an answer
1.40
1.67
1.28
1.29
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Question # 13
During the positive half-cycle in the half-wave rectification, the diode
Choose an answer
does not conduct
conducts
either of them
neither of them
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Question # 14
CRO deflects the beam of
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protons
alpha particles
electrons
neutrons
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Question # 15
The time period of a system executing simple harmonic motion depends upon
Choose an answer
Amplitude
Force constant
Mass
b and c
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Question # 16
With increase in temperature the viscosity of
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Both gases and liquid increase
Both gases and liquid decrease
Gases increases and of liquid decrease
liquid increases and of gases decreases
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Question # 17
The half-life of ratio-active element depend on
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Temperature
Pressure
Nature of element
Amount of radioactive substance
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Question # 18
Magnification of a convex lens is
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M = p/d
M = p/q
M = q/p
None of these
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Question # 19
Which shift show that universe is expanding
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Yellow shift
Blue shift
Red shift
Green shift
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Question # 20
The torque is taken as negative when it is
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Clockwise
Anticlockwise
Both
None of these
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Question # 21
It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall.This is due to the fact that his voice.
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Has a definite pitch
Has a definite quality
Has a definite capacity
Can penetrate the wall
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Question # 22
From scaning electron microscope, remarkable quality can be achieved having the image of
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One dimensional
Two dimensional
Three dimensional
None of these
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Question # 23
Stationary waves are the superposition of two waves moving along a string but
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In same direction
In opposite direction
Both
None of these
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Question # 24
The product of moment of inertia and angular velocity is called
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Angular momentum
Kinetic energy
Torque
Work
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Question # 25
Phenomenon of interference and diffraction support the:
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Quantum nature of light
Tranverse nature of light
Wave nature of light
Complex nature of light
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Question # 26
For an ideal gas system, the internal energy and temperature are
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Directly proportional
Inversely proportional
Neither direct nor inversely proportional
None of these
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Question # 27
Neutron was discovered in
Choose an answer
1915
1920
1925
1932
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Question # 28
Slope of velocity time graph is
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Speed
Work
Power
Acceleration
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Question # 29
Velocity is a
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Scalar quantity
vector quantity
constant quantity
none of them
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Question # 30
Gamma rays consist of stream of
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electrons
protons
photons
all of them
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Question # 31
Radian is the unit of
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Solid Angle
Plane Angle
both a and b
None of these
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Question # 32
A spring-mass system oscillates with a frequency v.if it is taken in an elevator slowly accelerating upward.the frequency will
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Increase
Decrease
Remains same
Become zero
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Question # 33
β-particles is absorbed by
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1 ~ 5 mm of Al sheet
5 ~ 10 mm Al sheet
3 mm of Al sheet
None of these
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Question # 34
The number of neutron in the following nucleus are
8
O
17
Choose an answer
8
17
7
25
None
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Question # 35
The drag force F on a sphere of radius 'r' moving slowly with speed V through a fluid of viscosity η by Stake's law
Choose an answer
F = πηra
F = 6πηrω
F = 6πηrV
F = 6πηraV
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Question # 36
At what place motion of simple pendulum will be slowest
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Poles
Equator
At the centre of the earth
None of these
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Question # 37
A spectrometer is an optical device used to study the spectra from different sources of light which is
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Absorption spectra
Emission spectra
Discrete spectra
None of these
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Question # 38
If R is gas constant for I gram mole C
p
and C
v
are specific heat for a solid then
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C
p
- C
v
= R
C
p
- C
v
< R
C
p
- C
v
= 0
C
p
- C
v
> R
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Question # 39
A small metallic sphere is dropped in a long jar of honey, it will move as
Choose an answer
Float in jar
It will move with g
Fall with acceleration less than g
Grain terminal velocity
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Question # 40
Hooks law hols within
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Proportional limit
Elastic limit
Plastic limit
None
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Question # 41
Electric intensity at a place due to charge conductor is a:
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Scalar quantity
Vector quantity
Semi-vector and semi- scalar
Dimensionless quantity
Both A and D are true
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