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

Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?

Question # 2

Smaller the damping, greater will be the

Question # 3

When temperature increase, the frequency of a tuning fork

Question # 4

While describing the motion of a simple pendulum, the frictional effects are

Question # 5

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

Question # 6

If F=0.04 N and X=4 cm then K=

Question # 7

Which of the following is the longitudinal waves?

Question # 8

When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to

Question # 9

Si units of time period is

Question # 10

The bob of a simple pendulum is suspended by

Question # 11

SI unit of frequency is

Question # 12

Two sources of sound are said to be coherent if

Question # 13

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

Question # 14

In transverse waves, the individual particles of the medium move:

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 SI unit of wave length is:
A. Kilometer
B. Metre
C. Centimetre
D. Hertz
2 Energy is not carried by
A. Transverse progressive waves
B. Longitudinal vibration
C. Stationary waves
D. Electromagnetic
3 In the same medium, velocity of the wave:
A. Goes on increasing
B. Remains constant
C. Goes on decreasing
D. None of these
4 Which of the following changes at an antinode in a stationary wave?
A. Density only
B. Pressure only
C. Both pressure and density
D. Neither pressure nor density
5 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
6 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
7 In the production of beats by 2 waves of same amplitude and nearly same frequency, the maximum intensity to each of the constituent waves is
A. Same
B. 2 times
C. 4 times
D. 8 times
8 transverse wave motion is possible in:
A. Air
B. A mixture of NH3and O2
C. Strings
D. All of these
9 One complete round trip of the body about its mean position is called
A. displacement
B. vibration
C. a complete motion
D. an acceleration
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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