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 time period a simple pendulum is 2 s, its frequency would be

Question # 2

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

Question # 3

The loudness and pitch of a sound note depends on

Question # 4

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

Question # 5

The expression for restoring force is

Question # 6

The total energy of spring mass system is

Question # 7

The wave form of S.H.M will be

Question # 8

The expression of Hook's law is

Question # 9

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

Question # 10

For production of beats the two sources must have

Question # 11

Sound waves in air always

Question # 12

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

Question # 13

The number of vibrating body at any instant from its equilibrium position is called

Question # 14

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

Question # 15

When two waves with same frequency and constant phase difference phase difference interfere

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Sr.# Question Answer
1 The principle of superposition states that
A. The total displacement due to several waves is the sum of the displacement due to those waves acting individually
B. Two stationary waves superimpose to give two progressive waves
C. A diffraction pattern consists of many interference patterns superimposed on one another
D. Two progressive waves superimpose to give a stationary wave
2 If F=0.04 N and X=4 cm then K=
A. 1 Nm-1
B. 2 Nm-1
C. 3 Nm-1
D. 4 Nm-1
3 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
4 The distance covered by the wave during one period is called its:
A. Wave number
B. Frequency
C. Wavelength
D. Time period
5 The total energy of spring mass system is
A. zero
B. changing with time
C. constant
D. none of them
6 The wave form of S.H.M will be
A. square wave
B. sine wave
C. rectified wave
D. saw-tooth wave
7 The velocity of sound is greatest in
A. Water
B. Air
C. Vacuum
D. Metal
8 If a freely oscillating system is subjected to an external force, then
A. free vibrations will take place
B. the body will move with its natural frequency
C. forced vibrations will take place
D. none of them
9 Which of the following is not mechanical wave?
A. Sound wave
B. Light wave
C.
wave produced in spring
D. None of them
10 If the time period a simple pendulum is 2 s, its frequency would be
A. 2 Hz
B. 1.5 Hz
C. 1.0 Hz
D. 0.5 Hz

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