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MDCAT Physics Online Test MCQs With Answers
Question # 1
The peak value of an AC is 2√2 ampere.Its RMS value will be
Choose an answer
√2 A
2√2A
2 A
Zero
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Question # 2
The unit of product RC is
Choose an answer
volt
Resistance
Second
Coulomb
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Question # 3
The earth's potential and potential at infinity are taken:
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Equal
Zero
First is greater than the second
Second is greater than the first
Both (A) and (B)
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Question # 4
At what point/points in its path does a projectile have its maximum speed
Choose an answer
At the point of projection
At the point where its strikes the ground
Both
None of these
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Question # 5
The distance between the centres of two consecutive bright fringes (or dark fringes) is called
Choose an answer
wavelength
fringe width
amplitude
path difference
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Question # 6
Radio frequency (R.F.) shielding of a coil means to protect from external circuit
Choose an answer
Varying magnetic field
Magnetic field
Dust and heat
Electric field
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Question # 7
Without using a clock you want to find the time period of oscillation of a mass m attached to a spring Which of the following you will need
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Light spring
Meter scale
Known mass
All of these
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Question # 8
A curie represents a very strong source of
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alpha particle
betta particle
gamma particle
none of them
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Question # 9
If the mass of the uranium is much greater than the critical mass, then the chain reaction proceeds at
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Very slow speed
High speed
Rapid speed
None of these
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Question # 10
Sound is an example of
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longitudinal waves
transverse waves
both of them
none of them
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Question # 11
A typical rocket consumers fuel of about
Choose an answer
5000 Kgs
-1
10,00 Kgs
-1
10000 Kgs
-1
100000 Kgs
-1
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Question # 12
When a gas is heated at constant pressure, its volume is increased and its density
Choose an answer
Increased
Increased rapidly
Decreased
None of these
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Question # 13
A rheostat (a variable resistance) can be used as
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Variable resistor
Potential divider
Potentiometer
a and b
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Question # 14
Computerized axial tomography (CAT-scanner) is a system in which X-rays are
Choose an answer
Maximum through the subject
Minimum absorptions through the subject
Depending upon the subject
None of these
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Question # 15
Zero or low can be any voltage between:
Choose an answer
0 to 0.8 V
1.5 to to 2.0 V
3.5 to 5 V
2 to 5 V
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Question # 16
What makes the hair shaving brush cling together when taken out of water
Choose an answer
Viscosity
Attraction between the hair
Gravity
Surface tension
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Question # 17
In forward bias,the width of potential barrier in a p-n junction diode
Choose an answer
Increases
Decreases
Remains constant
First A and B
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Question # 18
In a magnetic field the charge at rest experiences
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No Force
Maximum Force
Minimum force
None of these
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Question # 19
Ionization of matter, when α-particle pass through it is by
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Direct elastic collision
Electrostatic attraction
Inelastic collision
a and b
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Question # 20
Which of the following particle emit with same energy from nucleus
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α-particle
β-particle
γ-particle
None of these
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Question # 21
The spin angular momentum is the angular momentum of a
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Rotating body
Revolving body
Spiming boy
None of these
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Question # 22
A drop in the white blood cells followed by the radiation sickness is
Choose an answer
Diarrhea
Vomiting
Fever
All of these
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Question # 23
The dielectric constant K of an insulator cannot be
Choose an answer
2
10
5
∞
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Question # 24
Hook's law is defined as
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F and X are direct proportional
F and X are inverse proportional
F and X has no relation
None of these
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Question # 25
In which case application of angular velocity is useful?
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When a body is rotating
When velocity of body is in a straight line
When velocity is in a straight line
None of these
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Question # 26
In simple harmonic motion,
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The velocity and displacement of the vibrating particle are in the same phase
The velocity and acceleration of the vibrating particle are in the same phase
The velocity of the vibrating
The acceleration of the vibrating particle is ahead of displacement by a phase of π.
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Question # 27
When a stretched string of length 'I' is plucked form one quarter of its length, the string will vibrate in
Choose an answer
one loop
two loops
three loops
four loops
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Question # 28
A pendulum whose time period is 2 sec. is called
Choose an answer
Simple pendulum
Second's pendulum
Focault's pendulum
None of these
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Question # 29
When T = 1.0 sec and g = 9.8 ms
-2
. Find the length of the pendulum
Choose an answer
0.83 m
0.25 m
0.93 m
0.99 m
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Question # 30
γ-rays of energy more than 0.5 MeV can produce
Choose an answer
Pair production
Compton effect
Photo electric effect
None of these
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Question # 31
In p-type semiconductor
Choose an answer
Major current carrier is electrons
Major carrier is mobile negative ions
Major carrier is mobile holes
The number of mobile holes exceeds the number of acceptors
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Question # 32
Successive dark and bright fringes are formed each time the moveable mirror in Michelsion's interferometer is moved a distance
Choose an answer
λ/2
λ/4
λ
3/2
λ
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Question # 33
Substances that donot flow easily are
Choose an answer
Honey
Thick tar
Mobile oil
All of these
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Question # 34
A system under going forced vibrations is known as
Choose an answer
Driven harmonic oscillator
Vibration harmonic oscillator
Frequency harmonic oscillator
None
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Question # 35
SI unit of potential difference is volt it can be written as
Choose an answer
JC
-2
JC
-1
JC
J.A
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Question # 36
In coordinate axes, the left ward forces are taken as
Choose an answer
Positive
Negative
Just units only
None of these
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Question # 37
The particles of the medium, as the wave passes through it are in phase with each other if
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they are at the same distance form equilibrium position
they are at the same distance from equilibrium position
both of them
any one of them
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Question # 38
The relation for the diffraction pattern, when it is minimum
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d/2 sin θ = λ
sin θ = λ/2
d sin θ = λ
None of these
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Question # 39
In diesel engine no sparking device and no need of
Choose an answer
Heavy current unit
Spark plug
Instant starting
None of these
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Question # 40
Battery is charged in motor cars. Which is based.
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Chemical effect
Magnetic effect
Electric effect
None
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Question # 41
A particle of mass 'm' at rest is acted upon by a force 'P' for a time 't' its kinetic energy after an interval 't' is
Choose an answer
P
2
t
2
/m
P
2
t
2
/2m
P
2
t
2
/3m
Pt/2m
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