Reflection of Sound
If a person drops a pebble in a well of 100 m depth, after how much time (in seconds) will he be able to hear the sound?
Acceleration due to gravity, g=10 ms−2
Speed of sound in air, v=343 ms−1
- MRI scan
- Radio waves
- Infrasonic waves
- Electro-magnetic waves
- Ultrasonic waves
- Refraction of sound waves
- Reflection of sound waves
- Echo of the sounds
- Absence of other sounds
For a sound wave, angle of reflection is always______angle of incidence.
- twice the
What frequency do whales communicate at ?
infrasonic frequencies as low as 5 Hz
ultrasonic frequencies as high as 45 kHz
in the audible range of the human ear
both A and B
Sound and light waves:
have similar wavelength
obey the laws of reflection
travel as longitudinal waves
travel through vacuum
This phenomenon reverberation can be observed in:
All of these
The angle of reflection equals to the angle of incidence, only holds true for the light wave but not for a sound wave.
Bats produce high-pitched ultrasonic squeaks to know the distance of his prey.