Unit 12: Waves + Unit 13: Sound

1

Which of the following is a transverse wave?

A Sound in air B Water surface wave C Compression wave D Seismic P-wave

2

Destructive interference results in:

A Maximum displacement B Minimum displacement C Increase in frequency D Increase in wavelength

3

Wave motion is the transfer of:

A Matter only B Energy only C Both matter and energy D Neither matter nor energy

4

Diffraction of waves is most noticeable when:

A Wavelength is very small B Wavelength is comparable to obstacle size C Amplitude is large D Frequency is high

5

The bones of middle ear are called:

A Vertebrae B Ossicles C Cartilage D Ligaments

6

The unit of wave speed is:

A m B m/s C Hz D s

7

The maximum displacement of a vibrating particle from its mean position is called:

A Wavelength B Frequency C Amplitude D Velocity

8

Which factor does NOT affect the speed of sound in air?

A Temperature B Humidity C Pressure D Density

9

Which object produces sound when it vibrates?

A Stone B Table C Tuning fork D Wall

10

In transverse waves, particles vibrate:

A Parallel to wave direction B Along the wave path C Perpendicular to wave direction D In spiral paths

11

Reflection of waves occurs when waves:

A Change medium B Hit a barrier C Increase frequency D Decrease speed

12

Antinodes in a standing wave are points of:

A Zero displacement B Minimum energy C Maximum displacement D No vibration

13

The region of high pressure in a sound wave is called:

A Rarefaction B Compression C Amplitude D Frequency

14

The speed of a wave depends on:

A Amplitude only B Frequency only C Nature of medium D Source of wave

15

Auditory nerve carries signals to:

A Heart B Lungs C Brain D Eye

16

The wavelength of a tsunami in deep water is:

A Very small B Moderate C Very large D Zero

17

Ultrasound is commonly used in:

A Radio transmission B Medical imaging C Heating devices D Lighting systems

18

Which part of ear converts sound vibrations into electrical signals?

A Pinna B Cochlea C Eardrum D Auditory canal

19

Compressions and rarefactions are characteristics of:

A Light waves B Transverse waves C Longitudinal waves D Surface waves

20

Constructive interference results in:

A Decreased amplitude B Zero displacement C Increased amplitude D No effect

21

Frequency of audible sound for humans ranges from:

A 0–20 Hz B 20–20,000 Hz C Above 20,000 Hz D Below 20 Hz

22

Which of the following is NOT a characteristic of sound?

A Loudness B Pitch C Speed D Colour

23

The distance between two successive crests is called:

A Amplitude B Frequency C Wavelength D Time period

24

Which of the following causes hearing loss?

A Soft sounds B Moderate sounds C Loud noise D Silence

25

Which wave phenomenon explains bending of waves around obstacles?

A Reflection B Refraction C Diffraction D Interference