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 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 # 2

For production of beats the two sources must have

Question # 3

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?

Question # 4

If the metal bob is a simple pendulum is replaced by a wooden bob, then its time period will

Question # 5

The magnetic moment of a circular coil carrying current is

Question # 6

For obtaining appreciable extension, the wire should be

Question # 7

When boron is added as an impurity to silicon, the resulting material is.

Question # 8

Quantity that remains unchanged in a transformer is

Question # 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

Question # 10

When a hydrogen atom is bombarded, the atom is excited to the n = 4 state of hydrogen atom. The energy released when the atom falls from n = 4 state to the ground state is

Question # 11

A capacitor acts as an infinite resistance for

Question # 12

The henry is the unit for

Question # 13

The contrast in the fringes in any interference pattern depends on

Question # 14

The sieman is the SI unit of

Question # 15

To increase the magnification of a telescope

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NAT-II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 Blood has a density
A. Equal to water
B. Greater then water
C. Lesser then water
D. None of these
2 Which of the following is a scalar quantity?
A. Density
B. Displacement
C. Torque
D. Weight
3 A body moves a distance of 10 m along a straight line under the action of a force of 5 Newton's. If the work done is 25 joules, the angle which the force takes with the direction of motion of the body is:
A. 0°
B. 30°
C. 60°
D. 90°
4 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
5 What remains constant when the earth revolves around the sun?
A. Angular momentum
B. Linear momentum
C. Angular kinetic energy
D. Linear kinetic energy
6 Centre of mass is a point
A. Which is geometric centre of a body
B. From which distance of particles are same
C. Where the whole mass of the body is supposed to be centered
D. Which is the origin of reference frame
7 A boy is dropped from a tower with zero velocity, reaches ground in 4s. The height of the tower is about
A. 80 m
B. 20 m
C. 160 m
D. 40 m
8 All of the following statements are correct except
A. The total focal length of astronomical telescope is the sum of the focal lengths of its two lenses
B. The image formed by the astronomical telescope is always erect because the effect of the combination of the two lenses is divergent
C. The magnification of an astronomical telescope can increases by decreasing the focal length of the eyepiece
D. The magnifying power of the refracting type of astronomical telescope is the ratio of the focal length of the objective to that of the eye piece
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 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

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