EASY
8th CBSE
IMPORTANT
Earn 100

What are ultrasonics and infrasonics?

Important Questions on Sound

EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 13 - Sound>Looking Back>Q 3
What is the unit of measurement of loudness of sound?
EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 13 - Sound>Looking Back>Q 4
Mention two hazards of noise pollution.
EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 13 - Sound>Looking Back>Q 5
Mention two ways of reducing noise pollution.
EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 13 - Sound>Exercises>Q A
Which is not a characteristic of vibrations?
EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 13 - Sound>Exercises>Q A
The amplitude of a sound wave decides it's _____.
EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 13 - Sound>Exercises>Q A
A tuning fork of frequency 384 Hz produces a lower note than one of frequency_______.
EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 13 - Sound>Exercises>Q A
The loudness of sound does not depend on the _______.
EASY
8th CBSE
IMPORTANT
New Science Ahead 8>Chapter 13 - Sound>Exercises>Q A
The amplitude and frequency of a sound wave are increased. Which of the following is true?