EASY
9th CBSE
IMPORTANT
Earn 100

The frequency of a sound wave is 20 Hz. Find its time period.

Important Questions on Sound

EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Practice Problems>Q 10
Radio station transmits music at 219 m wavelength and 1,300 kHz frequency. Calculate the velocity of radiowaves.
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Practice Problems>Q 11
A longitudinal wave is travelling along a spiral spring with velocity of 1 m s-1. If time period of wave is 0.1 s, what is its wavelength?
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Practice Problems>Q 12
A boat at anchor is rocked by waves whose crests are 100 m apart and whose velocity is 25 m s-1. How often do the crests reach the boat in? Choose the correct answer.
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Practice Problems>Q 13
The sound wave travels with a speed of about 330 m s-1. What is the wavelength of sound whose frequency is 550 hertz?
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Practice Problems>Q 14
If the period of small ripples on water is 0.1 s and their wavelength is 5 cm, what is the speed of the wave?
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Practice Problems>Q 15
A wave is moving in the air with a velocity of 340 m s-1. Calculate the wavelength, if its frequency is 512 vibrations per second.
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Practice Problems>Q 16
At 25°C, sound travels at a speed of about 346 m s-1. What is the wavelength of sound whose frequency is 550 hertz?
EASY
9th CBSE
IMPORTANT
Essentials of PHYSICS Class IX>Chapter 5 - Sound>Assignment>Q 1
What is transferred by wave motion from one place to other, matter or energy?