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 particle is moving in a uniform magnetic filed, then

Question # 2

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

Question # 3

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 # 4

Two sources of sound are said to be coherent if

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

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

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

Question # 8

At 0°K which of the following properties of a gas will be zero?

Question # 9

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

Question # 10

The volt/metre is the unit of:

Question # 11

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

Question # 12

Who explained the origin of the Fraunhoffer lines?

Question # 13

In a voltmeter the conduction takes place due to

Question # 14

A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when:

Question # 15

A lens behaves as a converging lens in air and a diverging lens in water. The refractive index of the material is

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NAT-II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 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
2 If the earth were to rotate faster, than its present speed the weight of an object will
A. Increase at the equator but remain unchanged at the poles
B. Decrease at the equator but remain unchanged at the poles
C. Remain unchanged at the decrease but decrease at the poles
D. Remain unchanged at the equator but increase at the poles
3 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
4 Which of the following particles would experience the largest magnetic force when projected with the same velocity perpendicular to a magnetic field?
A. Proton
B. Electron
C. He+
D. Li+
5 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°
6 Energy is stored in the choke coil in the form of
A. Heat
B. Magnetic energy
C. Electric energy
D. Electro-magnetic energy
7 An ideal choked (used along with fluorescent tube) would be
A. A pure resistor
B. A pure capacitor
C. A pure inductor
D. A combination of an inductor and a capacitor
8 At 0°K which of the following properties of a gas will be zero?
A. Kinetic energy
B. Potential energy
C. Vibrational energy
D. Density
9 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
10 Ultra-violet radiation of 6.2 eV falls on an aluminium surface. K.E. of fastest electron emitted is (Work function = 4.2 eV)
A. 3.2 x 10-21 J
B. 3.2 x 10-19 J
C. 7 x 10-25 J
D. 9 x 10-32 J

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