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 waves which propagate out in space due to oscillation of electric and magnetic fields are known as

Question # 2

In the resonance condition, the amplitude of the oscillator becomes

Question # 3

Which one is not produced by sound waves in air?

Question # 4

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

Question # 5

Two sources of sound are said to be coherent if

Question # 6

The velocity of sound at same temperature is maximum in

Question # 7

Velocity of sound in vacuum (in m/s) is

Question # 8

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

Question # 9

When an oscillatory motion repeats itself, then this type of motion is called

Question # 10

Acceleration of the mass at any instant is given by

Question # 11

If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:

Question # 12

In solids, only following type/s of wave can travel:

Question # 13

Smaller the damping, the resonance will be

Question # 14

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

Question # 15

Sound waves in air always

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The waves produced in a microwave oven have wavelength.
A. 12 mm
B. 12 cm
C. 12 m
D. 12 mm
2 Which one of the following elasticizes is possessed by fluids:
A. Young's elastic modulus (length)
B. Bulk elastic modulus (volume)
C. Modulus of rigidity (shape)
D. None of these
3 The speed of sound in a medium depends on
A. The elastic property but not on the inertia property
B. The inertia property but not on the elastic property
C. The elastic property as well as the inertia property
D. Neither the elastic property nor the inertia property
4 The wave form of S.H.M will be
A. square wave
B. sine wave
C. rectified wave
D. saw-tooth wave
5 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
6 If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:
A. Stationary waves
B. Transverse waves
C. Both of these
D. None of these
7 When a body is performing S.H.M., its acceleration is
A. inversely proportional to the displacement
B. directly proportional to the applied force
C. directly proportional to the amplitude
D. directly proportional to the displacement but in opposite direction
8 When sound waves travel from air to water which of these remains constant?
A. Velocity
B. Frequency
C. Wavelength
D. All the above
9 A traveling wave has a shape of:
A. Square wave
B. Sine wave
C. Parabola
D. hyperbola
10 Of the following, the option ______ reminds of longitudinal waves.
A. Sound waves
B. Heat waves
C. Electromagnetic waves
D. Light waves

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