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

There are discrete energy levels in atoms. It was first experimentally demonstrated by

Question # 2

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

Question # 3

To explain his theory Bohr used

Question # 4

The velocity of a particle at an instant is 10 m/s and after 5s the velocity of the particle is 20 m/s. The velocity 3s before in m/s is:

Question # 5

The unit of electric current 'ampere' is the amount of current flowing through each of two parallel wires 1 m apart and of infinite length will give rise to a force between them equal to

Question # 6

An object is placed at a distance of f/2 from a convex lens. The image will be

Question # 7

Angular momentum is

Question # 8

The mass defect for the nucleus of helium is 0.0303 a.m.u. What is the binding energy per nucleon for helium in MeV?

Question # 9

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 # 10

Boyle's law is applicable in

Question # 11

A p-n junction has a thickness of the order of:

Question # 12

Planck's constant has the dimensions of:

Question # 13

If the earth were to rotate faster, than its present speed the weight of an object will

Question # 14

A moving charge will gain energy due to the application of

Question # 15

Which one of the following is a simple harmonic motion?

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NAT-II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 What is the average energy of N molecules of monoatomic gas?
A. 1/2 NKT
B. NKT
C. 3/2 NKT
D. 5/2 NKT
2 A capacitor acts as an infinite resistance for
A. AC
B. DC
C. Both AC and DC
D. Neither AC nor DC
3 Centre of mass is a point
A. Which is geometric centre of a body
B. From which distance of particles are same
C. Where the whole mass of the body is supposed to be centered
D. Which is the origin of reference frame
4 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
5 The sieman is the SI unit of
A. Resistance
B. Specific Resistance
C. Conductance
D. Inductance
6 A prism splits a beam of white light into its seven constituent colors. This is so because
A. Phase of different colors is different
B. Amplitude of different colors is different
C. Energy of different colors is different
D. Velocity of different colors is different
7 An object is placed at a distance of f/2 from a convex lens. The image will be
A. At one of the foci, virtual and double its size
B. At, 3f/2, real and inverted
C. At 2f, virtual and erect
D. At f, real and inverted
8 The twinkling of stars is due to
A. The fact that stars do not emit light continuously
B. The refractive index of the earth's atmosphere fluctuate
C. Intermittent absorption of star light by its own atmosphere
D. None of these
9 When a hydrogen atom is bombarded, the atom is excited to the n = 4 state of hydrogen atom. The energy released when the atom falls from n = 4 state to the ground state is
A. 1.275 eV
B. 12.75 eV
C. 5 eV
D. 8 eV
10 The angle between rectangular components of a vector is
A. 0°
B. 60°
C. 90°
D. 120°

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