Question # 1

Radio waves of constant amplitude can be generated with

Choose an answer

Rectifier

Filter

FET

oscillator

Two sources of sound are said to be coherent if

Choose an answer

They produce sounds of equal intensity

They produce sounds of equal frequency

They produce sound waves vibrating with the same phase

They produce sound waves with zero or constant phase different all instant of time

The time period of a simple pendulum is 2 seconds. If its length is increased by 4 times, then its period becomes

Choose an answer

16 s

12 s

8 s

4 s

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

Choose an answer

Decreases

Increases

Does not Change

May increase or decrease depending on the observer and the place of observation

At constant volume temperature is increased. Then

Choose an answer

Collision on walls will be less

Number of collisions per unit time will increase

Collisions will be in straight lines

Collisions will not change

In an A.C. circuit, a resistance of R ohm is connected in series with an inductance L. If phase angle between voltage and current be 45°, the value of inductive reactance will be

Choose an answer

R/4

R/2

R

Cannot be found with the given data

A pendulum clock set to give correct time in Karachi is taken to Quetta. It would give correct time if

Choose an answer

The mass of the pendulum is increased

The mass of the pendulum is decreased

The length of the pendulum is increased

The length of the pendulum is decreased

Which one of the following is a simple harmonic motion?

Choose an answer

Wave moving through a string fixed at both ends

Earth spinning about its own axis

Ball bouncing between two rigid vertical walls

Particle moving in a circle with uniform speed

A wire of radius r has resistance R, It it is stretched to a wire of r/2 radius, then the resistance becomes

Choose an answer

2R

4R

16R

Zero

Planck's constant has the dimensions of:

Choose an answer

Energy

Momentum

Frequency

Angular momentum

Copper and germanium are cooled to 70K from room temperature, then

Choose an answer

Resistance of copper increases while that of germanium decreases

Resistance of copper decreases while that of germanium increases

Resistance of both decreases

Resistance of both increases

With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

Choose an answer

Energy, momentum and mass

Energy

Energy and mass

Energy and linear momentum

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:

Choose an answer

8

4

6

7

If a diamagnetic substance is brought near north or south pole of a bar magnet it is

Choose an answer

Attracted by the poles

Repelled by the poles

Repelled by north pole and attracted by the south pole

Attracted by the north pole and repelled by the south pole

All of the following statements are correct except

Choose an answer

The total focal length of astronomical telescope is the sum of the focal lengths of its two lenses

The image formed by the astronomical telescope is always erect because the effect of the combination of the two lenses is divergent

The magnification of an astronomical telescope can increases by decreasing the focal length of the eyepiece

The magnifying power of the refracting type of astronomical telescope is the ratio of the focal length of the objective to that of the eye piece

A cable that can support a load W is cut into two equal parts. The maximum load that can be supported by either part is:

Choose an answer

W/4

W/2

W

2W

More Classes

Other Links

NAT II Physical Science Physics MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer