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 converging lens is used to form an image on a screen. When the upper half of the lens is covered by an opaque screen

Question # 2

If the earth were to rotate faster, than its present speed the weight of an object will

Question # 3

When n-type of semiconductor is heated

Question # 4

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 # 5

The unit of inductance is equivalent to

Question # 6

A couple produces

Question # 7

A boy is dropped from a tower with zero velocity, reaches ground in 4s. The height of the tower is about

Question # 8

What will be the duration of the day and night (in hour) if the diameter of the earth is suddenly reduced to half its original value, the mass remaining constant?

Question # 9

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

Question # 10

Which of the following sources give discrete emission spectrum?

Question # 11

To make the frequency double of an oscillator, we have to

Question # 12

The essential distinction between X-rays andγ-rays is that

Question # 13

The mass of a proton is 1847 times that of an electron. An electron and a proton are projected into a uniform electric field in a direction at right angles to the direction of the field with the same initial kinetic energy.The

Question # 14

The dimensional formula of torque is:

Question # 15

The half-life of a radio-isotope is 5 years. The fraction of atoms decayed in this substance after 15 years will be

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NAT-II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 A ten-ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts:
A. 1310 W
B. 670 W
C. 810 W
D. 1210 W
2 The contrast in the fringes in any interference pattern depends on
A. Fringe width
B. Intensity ratio of the sources
C. Distance between the slits
D. Wavelength
3 The length of a telescope is 36 cm. The focal lengths of its lenses can be
A. 30 cm, 6 cm
B. -30 cm, -6 cm
C. 30 cm, -6cm
D. -30cm, 6cm
4 Huygen's wave theory of light cannot explain
A. Diffraction
B. Interference
C. Polarization
D. Photoelectric effect
5 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
6 At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is:
A. Sinusoidal shape with amplitude A/3
B. Sinusoidal shape with amplitude A/2
C. Sinusoidal shape with amplitude A
D. Straight line
7 The average binding energy of a nucleus inside an atomic nucleus is about
A. 8 MeV
B. 8 eV
C. 8 Joules
D. 8 ergs
8 Blood has a density
A. Equal to water
B. Greater then water
C. Lesser then water
D. None of these
9 Which one of the following phenomena is not explained by Huygen's construction of wavefront?
A. Refraction
B. Reflection
C. Diffraction
D. Origin of spectra
10 Which of the following is not thermo dynamical function?
A. Enthalpy
B. Work done
C. Gibb's energy
D. Internal energy

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