NAT IIP Physical Science Physics Preparation Online Test for Pakistani Students

MCQ's Test For NAT II Physical Science Physics

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NAT II Physical Science Physics

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Question # 1

Absolute temperature can be calculated by

Question # 2

The dimensional formula of torque is:

Question # 3

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10-3N. The force between A and B when the charges on them are doubled and distance is halved

Question # 4

A lens behaves as a converging lens in air and a diverging lens in water. The refractive index of the material is

Question # 5

A wire of radius r has resistance R, It it is stretched to a wire of r/2 radius, then the resistance becomes

Question # 6

A cable that can support a load W is cut into two equal parts. The maximum load that can be supported by either part is:

Question # 7

If the dot product of two non-zero vectors vanishes, the vectors will be

Question # 8

A capacitor acts as an infinite resistance for

Question # 9

A moving charge will gain energy due to the application of

Question # 10

A ten-ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts:

Question # 11

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

Question # 12

According to the Hooke's law the force required to change the length of a wire by 'I' is proportional to

Question # 13

When we apply reverse bias to a junction diode, it

Question # 14

The unit of inductance is equivalent to

Question # 15

Shunt required in an ammeter of resistance R to decrease its deflection from 30 ampere to 10 ampere is

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NAT-II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 Which one of the following phenomena is not explained by Huygen's construction of wavefront?
A. Refraction
B. Reflection
C. Diffraction
D. Origin of spectra
2 At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is:
A. Sinusoidal shape with amplitude A/3
B. Sinusoidal shape with amplitude A/2
C. Sinusoidal shape with amplitude A
D. Straight line
3 When we apply reverse bias to a junction diode, it
A. Lowers the potential barrier
B. Raise the potential barrier
C. Increase the majority carrier current
D. Increase the minority carrier current
4 A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when:
A. q = Q/4
B. q = Q/2
C. q = Q
D. None of these
5 When n-type of semiconductor is heated
A. Number of electrons increases while that of holes decreases
B. Number of holes increases while that of electron decreases
C. Number of electrons and holes remains same
D. Number of electrons and holes increases equally
6 A body moving in circular motion with constant speed has
A. Constant velocity
B. Constant acceleration
C. Constant kinetic energy
D. Constant displacement
7 The part of a transistor which is heavily doped to produce large number of majority carriers is
A. Emitter
B. Base
C. Collector
D. Any of the above depending on nature of transistor
8 To explain his theory Bohr used
A. Conservation of linear momentum
B. Conservation of angular momentum
C. Conservation of quantum frequency
D. Conservation of energy
9 The henry is the unit for
A. Resistance
B. Magnetic flux
C. Magnetic field
D. Inductance
10 The velocity of falling raindrops attains limited value because of
A. Up thrust of air
B. Viscous force exerted by air
C. Surface tension effect
D. Air currents atmosphere

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