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 length of a telescope is 36 cm. The focal lengths of its lenses can be

Question # 2

The smooth or steady stream-line flow is know as

Question # 3

The temperature at which the speed of sound becomes double as was at 27°C is

Question # 4

In an A.C. circuit, a resistance of R ohm is connected in series with an inductance L. If phase angle between voltage and current be 45°, the value of inductive reactance will be

Question # 5

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

Question # 6

In an L-R circuit, time constant is that time in which current grows from zero to the value

Question # 7

The structure of solids is investigated by using

Question # 8

The peak voltage in 220 volt A.C. supply is nearly

Question # 9

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

Question # 10

A prism splits a beam of white light into its seven constituent colors. This is so because

Question # 11

For production of beats the two sources must have

Question # 12

The modulus of rigidity of a liquid is

Question # 13

To explain his theory Bohr used

Question # 14

A body of mass 2 kg is thrown up vertically with K.E. of 490 joules. If the acceleration due to gravity is 9.8 m/s2, the height at which the K.E, of the body becomes half its original value is given by:

Question # 15

According to the Hooke's law the force required to change the length of a wire by 'I' is proportional to

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NAT-II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be
A. Increasing by a factor of 2
B. Decreasing by a factor of 2
C. Decreasing by a factor of 4
D. Unchanged
2 Boyle's law is applicable in
A. Isochoric process
B. Isothermal process
C. Isobaric process
D. Isotonic process
3 The structure of solids is investigated by using
A. Cosmic Rays
B. X-rays
C. Intra red Radiation
D. γ-rays
4 A wire of radius r has resistance R, It it is stretched to a wire of r/2 radius, then the resistance becomes
A. 2R
B. 4R
C. 16R
D. Zero
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
A. Zero
B. 10 ohm
C. 1 ohm
D. 0.10 ohm
6 If the dot product of two non-zero vectors vanishes, the vectors will be
A. In the same direction
B. Opposite to each other
C. Perpendicular to each other
D. Zero
7 A planet is observed by an astronomical refracting telescope having an objective of focal length 16 m and an eyepiece of focal length 2 cm.
A. The distance between the objective and the eyepiece is 8 m
B. The angular magnification of the planet is 200
C. The image of the planet is inverted
D. The objective is smaller than the eyepiece
8 A cable that can support a load W is cut into two equal parts. The maximum load that can be supported by either part is:
A. W/4
B. W/2
C. W
D. 2W
9 If the period of oscillation of mass (M) suspended from a spring is 2s, then the period of mass 4M will be
A. 1 s
B. 2 s
C. 3 s
D. 4 s
10 A motorist travels A to B at a speed at 40 km/h and returns at speed of 60 km/h. His average speed will be
A. 40 km/h
B. 48 km/h
C. 50 km/h
D. 60 km/h

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