Reflection of Sound
Trending Questions
In case of reflection of a sound wave. The angle of reflection is always______ the angle of incidence.
equal to
depends on medium
less than
greater than
- True
- False
How do you define reverberation of sound? Suggest some steps to reduce the reverberation.
The velocity of sound in air is 330 m/s. Calculate the minimum distance between a source of sound and a reflecting wall, so that a clear echo may be heard. Take the time of persistence of the sound to be 0.1 s.
Does sound follow the same laws of reflection as light does? Explain.
In a stethoscope, the sound of heartbeats travels through the stethoscope tube.
by bending along the tube
in a straight line
by undergoing multiple reflection
as a sonic boom
Repetition of original sound heard after reflection is called
resonance
echo
dissonance
sonar
False
True
Give full form of SONAR. Also give two applications of SONAR.
Which part of the object vibrates when the following sounds are produced [3 MARKS]
1. Music of a Sitar or Veena
2. Buzzing of a bee
3. Sound from a speaker
A man standing between two cliffs produces a sound and hears two successive echoes at intervals of and respectively.
Why will an echo not be heard, when the distance between the source of sound and the reflecting surface is ?
A person standing between two walls as shown in the figure shouts out and hears three echoes after respectively. Determine values of x and y. Take the speed of sound to be .
Are reverberation and echo is similar?
How do you define reverberation of sound? Suggest some steps to reduce the reverberation.
- Both A and B
- There is less reverberation without curtains.
- Curtains absorb the sound.
- There is more reverberation without curtains.
WHY?
PLEASE ANSWER FAST
TOMMOROW I AM HAVING A TEST !PLEASE🙏🙏
what is reflection of sound
The reflected wave, incident wave and the normal to the reflecting surface:
in different planes
in same plane
in planes perpendicular to each other
incident and reflected waves are in the same plane while normal is in a perpendicular plane
Sound and light waves:
obey the laws of reflection
travel as longitudinal waves
have similar wavelength
travel through vacuum
Give an example to show that the speed of sound in solids is more than that of the speed of sound in air.
- East-west
- Up-down
- North-south
- Medium needs to be specified
WHY WE HEAR THE ECHO IN AN EMPTY SMALL ROOM WHOSE LENGTH IS LESS THAN 17.2 METRES ?
explain meall the laws of reflection of sound?
Write the full form of SONAR.
- North-south
- South-east
- North-west
- East-west
What frequency do whales communicate at ?
Infrasonic frequencies as low as 16 Hz
Ultrasonic frequencies as high as 45 kHz
In the audible range of the human ear
Both A and B
Sound waves follow laws of reflection.
Yes
No
Statement 1: Ram is standing at a distance of 33 m from a wall. He claps and hears the echo of his own clap.
Statement 2: Velocity of sound in air is 330 m/s and time of persistence for hearing is 110 of a second.
Statement 1 is true but information in statement 2 is insufficient to prove it
Statement 1 is true and information in statement 2 is sufficient to prove it
Statement 1 is false but information in statement 2 is insufficient to prove it
Statement 1 is false and information in statement 2 is sufficient to prove it
Sound Navigation and Ranging is abbreviated as _____.