EASY
8th CBSE
IMPORTANT
Earn 100

Which of the following frequency of sound can be heard by a dog but not by a man?

(a) 50,000 hertz

(b) 15,000 hertz

Important Questions on Sound

EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 13 - Sound>Very Short Answer Type Questions>Q 48
Name the substance which vibrates in a flute to produce sound.
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 13 - Sound>Very Short Answer Type Questions>Q 49
Sound cannot travel in vacuum.
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 13 - Sound>Very Short Answer Type Questions>Q 49
The number of oscillations per second of a vibrating object is called its time-period.
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 13 - Sound>Very Short Answer Type Questions>Q 49
If the amplitude of vibrations is large, sound is feeble.
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 13 - Sound>Very Short Answer Type Questions>Q 49
The lower the frequency of vibration, the higher is the pitch.
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 13 - Sound>Very Short Answer Type Questions>Q 49
If the amplitude of vibrations is doubled, the loudness of sound also gets doubled.
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 13 - Sound>Very Short Answer Type Questions>Q 49
When the amplitude of vibrations is halved, the loudness of sound becomes one-fourth.
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 13 - Sound>Very Short Answer Type Questions>Q 49
Unwanted or unpleasant sound is termed as music.