NAT IIP Physical Science Physics Preparation Online Test for Pakistani Students

MCQ's Test For NAT II Physical Science Physics

Try The MCQ's Test For NAT II Physical Science Physics

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NAT II Physical Science Physics

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Question # 1

When sound waves travel from air to water which of these remains constant?

Question # 2

Boyle's law is applicable in

Question # 3

Light appears to travel in straight lines since

Question # 4

Quantity that remains unchanged in a transformer is

Question # 5

A sun rise or sun set, the sun looks reddish because:

Question # 6

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 # 7

A wire is stretched to double of its length. The strain is

Question # 8

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

Question # 9

If tube length of astronomical telescope is 105 cm and magnifying power is 20 for normal setting. Calculate the focal length of objective

Question # 10

For obtaining appreciable extension, the wire should be

Question # 11

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 # 12

Blood has a density

Question # 13

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:

Question # 14

A p-n junction has a thickness of the order of:

Question # 15

When the length of a microscope tube increase, its magnifying power

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NAT-II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 The angle between rectangular components of a vector is
A. 0°
B. 60°
C. 90°
D. 120°
2 The magnetic moment of a circular coil carrying current is
A. Directly proportional to the length of the wire in the coil
B. Inversely proportional to the length of the wire in the coil
C. Directly proportional to the square of the length of the wire in the coil
D. Inversely proportional to the square of the length of the wire in the coil
3 In an L-R circuit, time constant is that time in which current grows from zero to the value
A. 0.63 Io
B. 0.50 Io
C. 0.37 Io
D. Io
4 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
A. 1 N/m
B. 2 x 10-7N/m
C. 1 x 10-2N/m
D. 4 x 102N/m
5 In a Millikan's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19C. The number of excess electrons on the drop is
A. 3.9
B. 4
C. 4.2
D. 6
6 The nucleus 6C12 absorbs an energetic neutron and emits a beta particle (β). The resulting nucleus is
A. 7N14
B. 5B13
C. 7N13
D. 6C13
7 The number of turns in the primary coil of a transformer is 200 and the number of turns in the secondary coil is 10. If 240 volts ac are applied to the primary, the output the secondary will be
A. 48A
B. 24V
C. 12V
D. 6V
8 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°
9 Bernoulli's equation is based upon law of conservation
A. Mass
B. Momentum
C. Energy
D. None of these
10 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

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