NAT IIP Physical Science Physics Preparation Online Test for Pakistani Students

MCQ's Test For NAT II Physical Science Physics

Try The MCQ's Test For NAT II Physical Science Physics

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NAT II Physical Science Physics

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Question # 1

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

Question # 2

When the length of a microscope tube increase, its magnifying power

Question # 3

According to classical theory the proposed circular path of an electron in Rutherford model of atom will be

Question # 4

The conductivity of a superconductor is

Question # 5

If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be

Question # 6

In a simple harmonic motion the kinetic energy (KE) and the potential energy (PE), are such that throughout the motion

Question # 7

The primary winding of transformer has 500 turns whereas its secondary has 5000 turns. The primary is connected to an a.c. supply of 20 V, 50 Hz. The secondary will have an output of

Question # 8

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 # 9

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 # 10

Radio waves of constant amplitude can be generated with

Question # 11

What will be the duration of the day and night (in hour) if the diameter of the earth is suddenly reduced to half its original value, the mass remaining constant?

Question # 12

The force between two charges 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become

Question # 13

The frequency of the incident light falling on a photosensitive metal plate is doubled, the kinetic energy of the emitted photoelectrons is

Question # 14

The temperature at which the speed of sound becomes double as was at 27°C is

Question # 15

Which of the following lists of physical quantities consists only of vectors:

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NAT-II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 When light wavelength 300 nm (nanometer) falls on a photoelectric emitter, photoelectrons are liberated. For another emitter, however, light of 600 nm wavelength is sufficient for creating photoemission. What is the ratio of the work functions of the two emitters?
A. 1 : 2
B. 2 : 1
C. 4 : 1
D. 1 : 4
2 The sieman is the SI unit of
A. Resistance
B. Specific Resistance
C. Conductance
D. Inductance
3 Which one of the following is a simple harmonic motion?
A. Wave moving through a string fixed at both ends
B. Earth spinning about its own axis
C. Ball bouncing between two rigid vertical walls
D. Particle moving in a circle with uniform speed
4 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
A. 1.92 N
B. 19.2 N
C. 12 N
D. 0.192 N
5 Velocity of sound in a diatomic as is 300 m/sec, what is its rms velocity?
A. 400 m/sec
B. 40 m/sec
C. 430 m/sec
D. 300 m/sec
6 What remains constant when the earth revolves around the sun?
A. Angular momentum
B. Linear momentum
C. Angular kinetic energy
D. Linear kinetic energy
7 A particle moves along a circular path under the action of a force. The work done by the force is
A. Zero
B. Positive and non-zero
C. Negative and non zero
D. None of the above
8 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
9 A 2 kg body and a 3 kg body have equal momentum. If the kinetic energy of 3 kg body is 10 J, the KE of 2 kg body will be
A. 6.66 J
B. 15 J
C. 22.5 J
D. 45 J
10 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

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