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

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

Question # 2

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

Question # 3

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 # 4

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

Question # 5

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 # 6

Which one of the following is a simple harmonic motion?

Question # 7

Bernoulli's equation is based upon law of conservation

Question # 8

A planet is observed by an astronomical refracting telescope having an objective of focal length 16 m and an eyepiece of focal length 2 cm.

Question # 9

Radio waves of constant amplitude can be generated with

Question # 10

In which of the following states does the incandescent substance give continuous spectrum?

Question # 11

Which of the following particles would experience the largest magnetic force when projected with the same velocity perpendicular to a magnetic field?

Question # 12

The conductivity of a superconductor is

Question # 13

Steel is preferred for making springs over copper. Why?

Question # 14

For obtaining appreciable extension, the wire should be

Question # 15

Two forces of 10N and 15N are acting simultaneously on an object in the same direction. Their resultant is

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NAT-II Physics Chapter 0 Important MCQ's

Sr.# Question Answer
1 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
2 Which of the following is a scalar quantity?
A. Density
B. Displacement
C. Torque
D. Weight
3 In a simple harmonic motion (SHM), which of the following does not hold?
A. To force on the particle is maximum at the ends
B. The acceleration in minimum at the mean position
C. The potential energy is maximum at the mean position
D. The kinetic energy is maximum at the mean position
4 The sum of the magnitude of two forces acting at a point is 18 and the magnitude of their resultant is 12. If the resultant is at 90°with the force of the smaller magnitude, then their magnitudes are:
A. 3, 15
B. 4, 14
C. 5, 13
D. 6, 12
5 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
6 The twinkling of stars is due to
A. The fact that stars do not emit light continuously
B. The refractive index of the earth's atmosphere fluctuate
C. Intermittent absorption of star light by its own atmosphere
D. None of these
7 A wire is stretched to double of its length. The strain is
A. 2
B. 1
C. zero
D. 0.5
8 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
9 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
A. Half the image will disappear
B. No change either in size or in intensity
C. Intensity of image will increase
D. Intensity of the image will decrease
10 In a simple harmonic motion the kinetic energy (KE) and the potential energy (PE), are such that throughout the motion
A. KE remains constant
B. PE remains constant
C. KE/PE is constant
D. KE+PE remains constant

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