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

Question # 2

A person standing near the track of a fast moving train has tendency to fall towards it because of

Question # 3

A person standing on a rotating platform has his hands lowered. He suddenly outstretches his arms. The angular momentum

Question # 4

The dimensional formula for the modulus of elasticity is same as that for:

Question # 5

Which of the following is the only vector quantity?

Question # 6

Radio waves of constant amplitude can be generated with

Question # 7

Two sources of sound are said to be coherent if

Question # 8

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

Question # 9

A piece of fuse wire melts when a current of 15 ampere flows through it.
With this current, if it dissipates 22.5 W, the resistance of fuse wire will be

Question # 10

In a common base transistor circuit, the current gain is 0.98. On changing the emitter current by 5.00 mA, the change in collector current is

Question # 11

Huygen's wave theory of light cannot explain

Question # 12

Which one of the following phenomena is not explained by Hugen's construction of wavefront?

Question # 13

The sieman is the SI unit of

Question # 14

The number of translation degrees of freedom for a diatomic gas is

Question # 15

A photocell with a constant p.d. of V volt across it illuminated by a point source from a distance of 25 cm. When the source is moved to a distance of 1m, the electrons emitted by the photocell

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NAT-II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 All of the following statements are correct except
A. The total focal length of astronomical telescope is the sum of the focal lengths of its two lenses
B. The image formed by the astronomical telescope is always erect because the effect of the combination of the two lenses is divergent
C. The magnification of an astronomical telescope can increases by decreasing the focal length of the eyepiece
D. The magnifying power of the refracting type of astronomical telescope is the ratio of the focal length of the objective to that of the eye piece
2 Band spectrum is produced by
A. H
B. He
C. H2
D. Na
3 A train of 150 m length is going towards north direction at a speed of 10 ms-1. A parrot flies at a speed of 5 ms-1towards south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to
A. 12 s
B. 8 s
C. 15 s
D. 10 s
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 A particle moving in a magnetic field has increase in its velocity, then its radius of the circle
A. Decreases
B. Increases
C. Remains the same
D. Becomes half
6 The nucleus 6C12 absorbs an energetic neutron and emits a beta particle (β). The resulting nucleus is
A. 7N14
B. 5B13
C. 7N13
D. 6C13
7 In which of the following states does the incandescent substance give continuous spectrum?
A. Vapours in atomic state
B. Vapours in molecular state
C. Solid or fluid in bulk state
D. Solid or fluid in plasma state
8 When the length of a microscope tube increases, its magnifying power
A. Decreases
B. Increases
C. May increases or decreases depending on the observer and the place of observation
D. Does not change
9 Which one of the following phenomena is not explained by Hugen's construction of wavefront?
A. Refraction
B. Reflection
C. Diffraction
D. Origin of sepectra
10 Which of the following sources give discrete emission spectrum?
A. Incandescent electric bulb
B. Sun
C. Mercury vapour lamp
D. Candle

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