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

Blood has a density

Question # 2

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is:

Question # 3

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 # 4

The magnetic moment of a circular coil carrying current is

Question # 5

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 # 6

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10-3N. The force between A and B when the charges on them are doubled and distance is halved

Question # 7

A moving charge will gain energy due to the application of

Question # 8

A force of 10N is acting along y-axis. Its component along x-axis is

Question # 9

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 # 10

The structure of solids is investigated by using

Question # 11

A ten-ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts:

Question # 12

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

Question # 13

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

Question # 14

Which of the following four statement is false?

Question # 15

If the dot product of two non-zero vectors vanishes, the vectors will be

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NAT-II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 A cable breaks if stretched by more than 2 mm. It is cut into two equal parts. How much either part can be stretched without breaking?
A. 0.25 m
B. 0.5 m
C. 1 mm
D. 2 mm
4 At constant volume temperature is increased. Then
A. Collision on walls will be less
B. Number of collisions per unit time will increase
C. Collisions will be in straight lines
D. Collisions will not change
5 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
6 Which of the following sources give discrete emission spectrum?
A. Incandescent electric bulb
B. Sun
C. Mercury vapour lamp
D. Candle
7 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
8 If a diamagnetic substance is brought near north or south pole of a bar magnet it is
A. Attracted by the poles
B. Repelled by the poles
C. Repelled by north pole and attracted by the south pole
D. Attracted by the north pole and repelled by the south pole
9 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
10 The half-life of a radio-isotope is 5 years. The fraction of atoms decayed in this substance after 15 years will be
A. 1
B. 3/4
C. 7/8
D. 5/8

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