Unit 12: Waves + Unit 13: Sound

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Question 1 of 10 0% read

1. Which part of ear converts sound vibrations into electrical signals?

A Pinna

B Cochlea

C Eardrum

D Auditory canal

2. Which of the following is a mechanical wave?

A Light wave

B Sound wave

C Radio wave

D X-ray

3. Acoustics deals with:

A Light

B Electricity

C Sound

D Heat

4. The time taken by a wave to complete one vibration is called:

A Frequency

B Amplitude

C Time period

D Wavelength

5. In acoustics, absorption of sound is increased by:

A Hard surfaces

B Smooth walls

C Soft materials

D Metal sheets

6. Destructive interference results in:

A Maximum displacement

B Minimum displacement

C Increase in frequency

D Increase in wavelength

7. Ultrasound is commonly used in:

A Radio transmission

B Medical imaging

C Heating devices

D Lighting systems

8. The part of ear that collects sound waves is:

A Cochlea

B Auditory nerve

C Ear canal

D Pinna

9. Diffraction of sound is more noticeable because sound has:

A Small wavelength

B Large wavelength

C High speed

D High frequency

10. Auditory nerve carries signals to:

A Heart

B Lungs

C Brain

D Eye

Unit 12: Waves + Unit 13: Sound

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