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

00:00
Question # 1

According to Stoke's law, drag force depends on

Question # 2

What remains constant when the earth revolves around the sun?

Question # 3

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 # 4

A particle moves along a circular path under the action of a force. The work done by the force is

Question # 5

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

Question # 6

The velocity of a particle at an instant is 10 m/s and after 5s the velocity of the particle is 20 m/s. The velocity 3s before in m/s is:

Question # 7

To get a resultant displacement of 10 m, two displacement vectors of magnitude 6 m and 8 m should be combined

Question # 8

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

Question # 9

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

Question # 10

Which of the modulus of elasticity is involved in compression a rod to decrease its length?

Question # 11

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 # 12

A couple produces

Question # 13

Which of the following is a scalar quantity?

Question # 14

If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be

Question # 15

An object is placed at a distance of f/2 from a convex lens. The image will be

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NAT-II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 In case of p-n junction diode, at high value of reverse bias, the current rises sharply. The value of reverse bias is known as:
A. Cut off voltage
B. Zener voltage
C. Inverse voltage
D. Critical voltage
2 The part of a transistor which is heavily doped to produce large number of majority carriers is
A. Emitter
B. Base
C. Collector
D. Any of the above depending on nature of transistor
3 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
4 Two forces are acting together on an object. The magnitude of their resultant is minimum when the angle between the force is
A. 0°
B. 60°
C. 120°
D. 180°
5 A particle moving in a magnetic field has increase in its velocity, then its radius of the circle
A. Decreases
B. Increases
C. Remains the same
D. Becomes half
6 Ball pen function on the principle of
A. Viscosity
B. Boyle's law
C. Gravitational force
D. Surface tension
7 As the electron in Bohr orbit of hydrogen atom passes from stat n = 2 to n = 1, the kinetic energy K and potential energy U change as
A. K two fold, U also two fold
B. K four fold, U also four fold
C. K four fold, U two fold
D. K two fold, U four fold
8 For production of beats the two sources must have
A. Different frequencies and same amplitude
B. Different frequencies
C. Different frequencies, same amplitude and same phase
D. Different frequencies and same phase
9 A conducting wire is drawn to double its length. Final resistivity of the material will be
A. Double of the original one
B. Half of the original one
C. One-fourth of the original one
D. Same as original one
10 What is the average energy of N molecules of monoatomic gas?
A. 1/2 NKT
B. NKT
C. 3/2 NKT
D. 5/2 NKT

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