MEDIUM
9th Manipur Board
IMPORTANT
Earn 100

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?

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
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.
EASY
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 11 - Waves and Sound>EXERCISES>Q 5
When you call your friend by name, do you produce a wave pulse of sound or a periodic wave?
MEDIUM
9th Manipur Board
IMPORTANT
Science for Class 9>Chapter 11 - Waves and Sound>EXERCISES>Q 6
Show graphically how density of air varies with distance when a periodic sound wave travels in it. Show the graph for two instants of time differing by half of periodic time.