ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 8 Waves

Try The MCQ's Test For ECAT Physics Chapter 8 Waves

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ECAT Physics Chapter 8 Waves

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Question # 1

If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get

Question # 2

At a certain instant a stationary transverse wave is found to have maximum kinetic energy. The appearance of string of that instant is

Question # 3

The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as

Question # 4

The time required to complete on vibration is called

Question # 5

The portion of the water above its mean level forms a:

Question # 6

Shock absorber of the car is an example of

Question # 7

Energy is not carried by

Question # 8

Data transmitted along glass-fiber cables is in the form of pulses of monochromatic red light each of duration 2.5 ns. Which of the following is the best estimate of the number of wavelength in each pulse?

Question # 9

If the length of a simple pendulum is 0.25 m its time period would be

Question # 10

In the formula for finding the speed of waves in the spring, unit of m in SIn units is:

Question # 11

The waves in which the particles of the medium have displacement along the direction of propagation of waves are called

Question # 12

The frequency of free vibrations is known as

Question # 13

When a body is performing S.H.M., its acceleration is

Question # 14

When the bob of simple pendulum is at extreme position, its K.E. will be

Question # 15

For transmission of both transverse and longitudinal waves, we can use:

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 When the bob of simple pendulum is at extreme position, its K.E. will be
A. maximum
B. minimum
C. zero
D. all of them
2 Progressive waves of frequency 300 Hz are superimposed in produced a system of stationary waves in which adjacent nodes are 1.5 m apart. What is the speed of the progressive waves?
A. 100 ms-1
B. 200 ms-1
C. 450 ms-1
D. 900 ms-1
3 The natural frequency of a pendulum which is vibrating freely, depends upon its
A. mass
B. length
C. material
D. all of them
4 Smaller the damping, greater will be the
A. frequency
B. wavelength
C. amplitude
D. none of them
5 The total energy of spring mass system is
A. zero
B. changing with time
C. constant
D. none of them
6 The time required to complete on vibration is called
A. frequency
B. total time
C. time period
D. velocity
7 The waves produced in a microwave oven have wavelength.
A. 12 mm
B. 12 cm
C. 12 m
D. 12 mm
8 The waves moving from a sitar to a listener in air are
A. Longitudinal progressive
B. Longitudinal stationary
C. Transverse progressive
D. Transverse stationary
9 If a simple pendulum is shifted from karachi to K-2 cliff, its time period
A. remains the same
B. decreases
C. increases
D. none of them
10 If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is
A. 360 m/s
B. 306 m/s
C. 331 m/s
D. 340 ms

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