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

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

Question # 2

A 50-volt battery is connected across 10-ohm resistor. The current is 4.5 A. The internal resistance of the battery is

Question # 3

Mechanical waves on the surfaces of a liquid are

Question # 4

A monochromatic source of light is placed at a large distance d from a metal surface. Photoelectrons are ejected at rate n, kinetic energy being E. If the source is brought nearer to distance d/2, the rate and kinetic energy per photoelectron become nearly

Question # 5

Copper and germanium are cooled to 70K from room temperature, then

Question # 6

The twinkling of stars is due to

Question # 7

When we apply reverse bias to a junction diode, it

Question # 8

If tube length of astronomical telescope is 105 cm and magnifying power is 20 for normal setting. Calculate the focal length of objective

Question # 9

Absolute temperature can be calculated by

Question # 10

The magnetic moment of a circular coil carrying current is

Question # 11

Which of the modulus of elasticity is involved in compression a rod to decrease its length?

Question # 12

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

Question # 13

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 # 14

In case of p-n junction diode, at high value of reverse bias, the current rises sharply. The value of reverse bias is known as:

Question # 15

Energy is stored in the choke coil in the form of

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NAT-II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 A body moving in circular motion with constant speed has
A. Constant velocity
B. Constant acceleration
C. Constant kinetic energy
D. Constant displacement
2 Band spectrum is produced by
A. H
B. He
C. H2
D. Na
3 The sieman is the SI unit of
A. Resistance
B. Specific Resistance
C. Conductance
D. Inductance
4 A point charge Q is placed at the mid-point of a line joining two charges, 4q and q. If the net force on charge q is zero, then Q must be equal to
A. -q
B. +q
C. -2q
D. +4q
5 Which of the modulus of elasticity is involved in compression a rod to decrease its length?
A. Young's modulus
B. Bulk modulus
C. Modulus of rigidity
D. None of the above
6 If the earth were to rotate faster, than its present speed the weight of an object will
A. Increase at the equator but remain unchanged at the poles
B. Decrease at the equator but remain unchanged at the poles
C. Remain unchanged at the decrease but decrease at the poles
D. Remain unchanged at the equator but increase at the poles
7 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
8 Radio waves of constant amplitude can be generated with
A. Rectifier
B. Filter
C. FET
D. oscillator
9 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
10 There are discrete energy levels in atoms. It was first experimentally demonstrated by
A. Rutherford's experiment
B. Franck Hertz experiment
C. Marsden's experiment
D. Somerfield experiment

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