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MDCAT Physics Online Test MCQs With Answers
Question # 1
Two physical quantities, of which one is a vector and the other is a scalar, having same dimensions are
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Torque and momentum
Power and pressure
Impulse and momentum
Torque and work
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Question # 2
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 # 3
Energy can be stored in
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Magnetic field of a capacitor
Electric field of a capacitor
Dielectric
None of these
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Question # 4
A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of particle.the motion of the particle takes place in a horizontal plane.It follows
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Linear momentum is constant
Velocity is constant
It moves in a circular path
None of these
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Question # 5
One rad (radiation absorbed dose) is
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0.01 Gray
0.03 Gray
0.05 Gray
None of these
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Question # 6
The output of NAND gate is 0 when
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all the inputs are at 1
all the inputs are at 0
at least one of the inputs is at 1
none of them
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Question # 7
In insulators
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Valence band is partially filled with electrons
Conduction band is partially filled with electrons
Conduction band is empty and valence band is filled with electrons
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Question # 8
A monochromatic source of light gives light of
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one colour
two colours
four colours
seven colours
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Question # 9
The reactance of a coil when used in the domestic A.C power supply (220 volts,50 cycles per second) is 50 ohms.The inductance of the coil is nearly
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2.2 henry
1.6 henry
0.22 henry
0.16 henry
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Question # 10
Laser beam can be used to generate
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One dimensional images
Two dimensional images
Three dimensional images
None of these
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Question # 11
During adiabatic expansion change of 2 moles of gas the internal energy is 100 j, the work done this expansion is
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Zero
-100 J
200 J
100 J
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Question # 12
Earth-sun travel around the galaxy is
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220000 ms
-1
230000 ms
-1
210000 ms
-1
200000 ms
-1
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Question # 13
There will be no change in _______ of light entering glass
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Velocity
Frequency
Direction
Wavelength
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Question # 14
If the diameter and mass of the earth become two times their present values, then the weight of an object on the surface of the earth will
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Remain unchanged
Become half
Become one fourth
Be doubled
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Question # 15
At every degree Celsius rise of temperature, the volume of a given mass of a gas at constant pressure increases by
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1/273 of its value at 0°C
1/373 of its value at 0°C
1/173 of its value of 0°C
1/700 of its value at 0°C
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Question # 16
A conductor which obeys Ohm's law is called
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Ohmic device
Non-ohmic device
Neither ohmic nor non-ohmic
None of these
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Question # 17
Dimension of momentum is
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ML
-1
T
M
-1
LT
MLT
MLT
-1
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Question # 18
The binding energy of deuteron is 3.5729 x 10
-13
J, convert it into eV
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2.13 MeV
2.15 MeV
2.23 MeV
2.27 MeV
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Question # 19
Shear modulus for brass is
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36
39
51
65
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Question # 20
Unified mass scale means that atomic mass is expressed in:
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Kg
Gram
Atomic mass unit
u only
Both C and D
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Question # 21
Which of the following is not an advantages of using optical fibres over copper cables?
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signal attenuation
number of signals carried per wire
cost of installation
none of the above
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Question # 22
An airplane flies 400 m from north and then files 300 m south and then flies 1200 m upwards then net displacement is
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1200 m
1300 m
1400 m
1500 m
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Question # 23
Digital circuits can be made by repetitive use of
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AND gate
OR gate
Not gate
NAND gate
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Question # 24
α-particles emitted with the
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Double energy
Same energy
Half of the energy
None of these
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Question # 25
Three resistors of 2, 3 and 6 ohms are connected in parallel, their equivalent resistance is
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Ω
3
Ω
5
Ω
7
Ω
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Question # 26
Mass spectrograph is used to
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Separate isotopes of an element
Measure masses of isotopes
Find abundance of isotopes
All
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Question # 27
At what temperature the speed of sound is double its speed in the air at 0°C
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1092°C
819°C
546°C
273°C
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Question # 28
The speed of sound
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Increases with the increase of the gas pressure
is not affected with the change in the gas pressure
decreases with the increase of the gas pressure
none of them
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Question # 29
The phase at the positive peak is
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∏/2
∏
3 ∏/2
2∏
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Question # 30
A signal is amplified at the output without any change of phase, if it is applied at the
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inverting input
non-inverting input
at any of the input
none of them
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Question # 31
If a transverse wave travelling in a denser medium is incident on a rare medium, it is reflected such that it undergoes a change of
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0
°
90
°
135
°
180
°
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Question # 32
By the slope of velocity time, we can determine the
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Acceleration
Constant velocity
Average velocity
Average acceleration
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Question # 33
The value of R/Z is equal to
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Cos θ
sin θ
tan θ
θ
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Question # 34
Which is modified form of galvanometer?
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potentiometer
battery
voltmeter
slide wire birdge
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Question # 35
When an excited helium atom collide with neon atom, each transferring additional energy of
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0.09 eV
0.08 eV
0.06 eV
0.05 eV
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Question # 36
The SI unit of conductance is
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mho
siemens
(ohm)
-1
all of them
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Question # 37
The potential energy of a particle executing SHM with amplitude A is E at the extreme position What is its kinetic energy at y = A/2?
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0.86 E
0.75 E
0.50 E
0.25 E
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Question # 38
Magnetic field is a:
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Vector quantity
Scalar quantity
Vector as well as scalar quantity
Neither A nor B
Any of A or B
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Question # 39
Shunt resistance is called
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By pass resistor
Specific resistance
Reactance
None of these
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Question # 40
The speed of flying bee is
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1 ms
-1
5 ms
-1
8 ms
-1
10 ms
-1
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Question # 41
The molecules or ions in a crystalline solid are
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static
not static
randomly moving
all of them
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