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

The part of a transistor which is heavily doped to produce large number of majority carriers is

Question # 2

What remains constant in the field of central force?

Question # 3

The half-life of a radio-isotope is 5 years. The fraction of atoms decayed in this substance after 15 years will be

Question # 4

If a diamagnetic substance is brought near north or south pole of a bar magnet it 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

Mechanical waves on the surfaces of a liquid are

Question # 7

All of the following statements are correct except

Question # 8

How does the Young's modulus vary with the increase of temperature?

Question # 9

Angular momentum is

Question # 10

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

Question # 11

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

Question # 12

The magnetic moment of a circular coil carrying current is

Question # 13

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

Question # 14

One cannot see fog because

Question # 15

The nucleus 6C12 absorbs an energetic neutron and emits a beta particle (β). The resulting nucleus is

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NAT-II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 Light appears to travel in straight lines since
A. It is not absorbed by the atmosphere
B. It is reflected by the atmosphere
C. Its wavelength is very small
D. Its velocity is very large
2 Shunt required in an ammeter of resistance R to decrease its deflection from 30 ampere to 10 ampere is
A. R/4
B. R/3
C. R/2
D. R
3 A body moving in circular motion with constant speed has
A. Constant velocity
B. Constant acceleration
C. Constant kinetic energy
D. Constant displacement
4 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
5 The dot product of two vectors is negative when
A. They are parallel vectors
B. They are anti-parallel vectors
C. They are perpendicular vectors
D. None of the above is correct
6 A 220 V, 50 Hz. A.C. source is connected to an inductance of 0.2 H and a resistance of 20 ohm in series. What is the current in the circuit?
A. 10 A
B. 5 A
C. 33.3 A
D. 3.33 A
7 Ultra-violet radiation of 6.2 eV falls on an aluminium surface. K.E. of fastest electron emitted is (Work function = 4.2 eV)
A. 3.2 x 10-21 J
B. 3.2 x 10-19 J
C. 7 x 10-25 J
D. 9 x 10-32 J
8 The peak voltage in 220 volt A.C. supply is nearly
A. 220 volt
B. 253 volt
C. 311 volt
D. 440 volt
9 Blood has a density
A. Equal to water
B. Greater then water
C. Lesser then water
D. None of these
10 Radio waves of constant amplitude can be generated with
A. Rectifier
B. Filter
C. FET
D. oscillator

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