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

The process in which energy is dissipated from the oscillating system is known as

Question # 2

SI unit of wave length is:

Question # 3

Which of the following changes at an antinode in a stationary wave?

Question # 4

Shock absorber of the car is an example of

Question # 5

The velocity of sound at same temperature is maximum in

Question # 6

The waves produced in a microwave oven have frequency

Question # 7

Which one is not produced by sound waves in air?

Question # 8

The time required to complete on vibration is called

Question # 9

Smaller the damping, the resonance will be

Question # 10

Which one of the following elasticizes is possessed by fluids:

Question # 11

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

Question # 12

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?

Question # 13

For production of beats the two sources must have

Question # 14

The waves which propagate by the collision of material particles are known as

Question # 15

Time period of simple pendulum is independent of

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 A traveling wave has a shape of:
A. Square wave
B. Sine wave
C. Parabola
D. hyperbola
2 If we increase the length of a simple pendulum four times, its time period will become
A. 2 times
B. 3 times
C. 4 times
D. 6 times
3 Which of the following is not mechanical wave?
A. Sound wave
B. Light wave
C.
wave produced in spring
D. None of them
4 A body is executing free vibrations when it oscilates
A. with the interference of an external force
B. without the interference of an external force
C. with the interference of an internal force
D. none of them
5 Laplace formula is derived from
A. Isothermal change
B. Adiabatic change
C. Isobaric change
D. None of these
6 If the mass of the simple pendulum becomes double, its time period
A. increase
B. decreases
C. remains constant
D. none of them
7 Which of the following medium/media can transmit both transverse and longitudinal waves:
A. Solids
B. Liquids
C. Gases
D. All of them
8 Ultra-violet rays differ from X-rays in that they
A. Cannot be diffracted
B. Cannot be polarized
C. Have a lower frequency
D. Are deviated when they pass through a magnetic field
9 When the bob of simple pendulum is at mean position, its K.E will be
A. maximum
B. minimum
C. zero
D. all of them
10 When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be
A. 45°
B. 90°
C. 135°
D. 180°

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