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

Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:

Question # 2

Transverse waves can be set up:

Question # 3

The example of mechanical wave is

Question # 4

A heavily damped system has a fairly

Question # 5

The damping depends upon the

Question # 6

The vibrations of factory floor caused by the running of heavy machinery is an example of

Question # 7

Acceleration of the mass at any instant is given by

Question # 8

Time period of a simple pendulum depends upon the

Question # 9

When a wave is travels from one place to another, it transfers:

Question # 10

Which of the following is the longitudinal waves?

Question # 11

An object undergoes S.H.M has maximum acceleration when its displacement form the means position

Question # 12

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

Question # 13

Laplace formula is derived from

Question # 14

If a simple pendulum is shifted from karachi to K-2 cliff, its time period

Question # 15

Which of the following is not mechanical wave?

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 For a body executing S. H. M, its
A. momentum remains constant
B. potential energy remains constant
C. kinetic energy remains constant
D. total energy remains constant
2 The number of vibrating body at any instant from its equilibrium position is called
A. displacement
B. frequency
C. amplitude
D. time period
3 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
4 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
5 When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be
A. W=Kxo
B. W=1/2Kxo
C. W=1/2Kx2o
D. W=4Kxo
6 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°
7 Time period of a simple pendulum depends upon the
A. length of the pendulum
B. acceleration due to gravity
C. none of them
D. both of them
8 Through which character we can distinguish the light waves from sound waves
A. Interference
B. Refraction
C. Polarization
D. Reflection
9 An object undergoes S.H.M has maximum acceleration when its displacement form the means position
A. maximum
B. zero
C. half of the maximum value
D. one third of the maximum value
10 The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be
A. 1 : 2
B. 4 : 1
C. 1 : 4
D. 2 : 1

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