EASY
9th Manipur Board
IMPORTANT
Earn 100

How sound is produced by the bell at your school? Observe and explain.

Important Questions on Waves and Sound

EASY
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 11 - Waves and Sound>Try to answer:>Q 2
Sound waves are also called a mechanical wave. Why?
MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 11 - Waves and Sound>Try to answer:>Q 1
What do you mean by wavelength, frequency, amplitude, and the periodic time of a sound wave? Which of the mentioned quantities does not change when sound passes through different media?
EASY
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 11 - Waves and Sound>Try to answer:>Q 2
What is the relation between the frequency, the wavelength of a sound wave, and its speed in a medium?
MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 11 - Waves and Sound>Try to answer:>Q 3
Distinguish between the intensity and the loudness of the sound.
EASY
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 11 - Waves and Sound>EXERCISES>Q 1
Define sound and explain how is it produced?
EASY
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 11 - Waves and Sound>EXERCISES>Q 2
Explain the formation of compressions and rarefactions in air near a source of sound.
EASY
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 11 - Waves and Sound>EXERCISES>Q 3
Define wavelength, periodic time and frequency of a wave.
EASY
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 11 - Waves and Sound>EXERCISES>Q 4
Derive the relation between wavelength, frequency and velocity of a periodic wave.