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 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

Question # 2

The modulus of rigidity of a liquid is

Question # 3

Bernoulli's equation is based upon law of conservation

Question # 4

The product of the pressure and volume of an ideal gas is

Question # 5

The direction of induced current is such that it opposes the very cause that has produced it. This is the law of

Question # 6

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

Question # 7

Light appears to travel in straight lines since

Question # 8

A moving charge will gain energy due to the application of

Question # 9

A conducting wire is drawn to double its length. Final resistivity of the material will be

Question # 10

In which of the following states does the incandescent substance give continuous spectrum?

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

Ultra-violet radiation of 6.2 eV falls on an aluminium surface. K.E. of fastest electron emitted is (Work function = 4.2 eV)

Question # 13

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 # 14

In a voltmeter the conduction takes place due to

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 Angular momentum is
A. Vector (axial)
B. Vector (polar)
C. Scalar
D. None of these
2 A voltmeter has resistance of 2000 ohms and it can measure up to 2V. If we want to increase its range to 10V then required resistance in series will be
A. 2000 ohm
B. 4000 ohm
C. 6000 ohm
D. 8000 ohm
3 At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is:
A. Sinusoidal shape with amplitude A/3
B. Sinusoidal shape with amplitude A/2
C. Sinusoidal shape with amplitude A
D. Straight line
4 A converging lens is used to form an image on a screen. When the upper half of the lens is covered by an opaque screen
A. Half the image will disappear
B. No change either in size or in intensity
C. Intensity of image will increase
D. Intensity of the image will decrease
5 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
A. Carry 1/4th their previous energy
B. Are 1/16th as numerous as before
C. Are 1/4th as numerous as before
D. Carry 1/4th their previous momentum
6 The time period of a simple pendulum is 2 seconds. If its length is increased by 4 times, then its period becomes
A. 16 s
B. 12 s
C. 8 s
D. 4 s
7 A photoelectric cell coverts
A. Electrical energy to light energy
B. Light energy to light energy
C. Light energy to electrical energy
D. Light energy to elastic energy
8 To increase the magnification of a telescope
A. The objective lens should be of large focal length and eyepiece should be of short focal length
B. The objective and eyepiece both should be of large focal lengths
C. Both the objective and eyepiece should be of smaller lengths
D. The objective should be small focal length and eyepiece should be of large focal length
9 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
10 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
A. 7.20 N
B. 11.25 N
C. 22.50 N
D. 45.00

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