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Unit 12: Waves + Unit 13: Sound

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Question 1 of 20 0% read

1. Which animal can hear ultrasound?

A Elephant
B Dog
C Bat
D Cow

2. The distance between two consecutive compressions is called:

A Amplitude
B Frequency
C Wavelength
D Pitch

3. Sound travels fastest in:

A Air
B Water
C Vacuum
D Solids

4. The number of waves passing a point per second is called:

A Amplitude
B Wavelength
C Frequency
D Velocity

5. Which of the following waves has both transverse and longitudinal properties?

A Sound wave
B Light wave
C Water surface wave
D Radio wave

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

A Rarefaction
B Compression
C Amplitude
D Frequency

7. Sound is produced due to:

A Reflection
B Vibration
C Refraction
D Diffraction

8. Excessive reverberation can be reduced by using:

A Glass
B Marble
C Curtains
D Concrete

9. Which instrument is used to measure sound level?

A Thermometer
B Barometer
C Sound level meter
D Voltmeter

10. Wave propagation refers to:

A Creation of waves
B Transmission of energy
C Absorption of waves
D Stopping of waves

11. The speed of a wave depends on:

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

12. Interference occurs when:

A Two waves overlap
B Wave changes speed
C Wave reflects
D Wave refracts

13. Nodes in a standing wave are points of:

A Maximum displacement
B Zero displacement
C Maximum velocity
D Maximum energy

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

A Temperature
B Humidity
C Pressure
D Density

15. Quality or timbre of sound helps us to distinguish sounds from:

A Same source
B Different sources
C Same frequency
D Same pitch

16. The unit of wave speed is:

A m
B m/s
C Hz
D s

17. Sound energy is a form of:

A Chemical energy
B Mechanical energy
C Electrical energy
D Nuclear energy

18. Wave motion is the transfer of:

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

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

A Pinna
B Cochlea
C Eardrum
D Auditory canal

20. Mechanical waves require:

A Vacuum
B Medium
C Electric field
D Magnetic field

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