English

State the Laws of Reflection of Sound.

Advertisements
Advertisements

Question

State the laws of reflection of sound.

Answer in Brief
Short/Brief Note
Advertisements

Solution

he laws of reflection of sound obey the laws of reflection of light. Hence the laws of reflection of sound are:
(i) The incident sound wave, the reflected sound wave, and the normal to the point of incidence all lie in the same plane.
(ii) The angle of reflection of sound is always equal to the angle of incidence of sound.

shaalaa.com
  Is there an error in this question or solution?
Chapter 7: Sound - Intex Question [Page 161]

APPEARS IN

Lakhmir Singh Physics [English] Class 10 ICSE
Chapter 7 Sound
Intex Question | Q 1. 2. | Page 161
Lakhmir Singh Physics Part 1 [English] Class 9
Chapter 5 Sound
Very Short Answers 2 | Q 62.3 | Page 208

RELATED QUESTIONS

An echo returned in 3 s. What is the distance of the reflecting surface from the source, given that the speed of sound is 342 m s−1?


The minimum distance between the source and the reflector in air. So that an echo is heard is approximately equal to ______.


Which of the following statement best describes frequency?


Name the device which is used to address a small gathering of people.


On which day, a hot day or a cold day, an echo is heard sooner ? Give reason for your answer.


In which medium, air or water, an echo is heard much sooner ? Why ?


The echo of a sound is heard after 5 seconds. If the speed of sound in air be 342 m/s, calculate the distance of the reflecting surface.


Name any two objects which are good reflectors of sound.


What is an echo ? How is echo formed ?


A man standing 825 metres away from a cliff (steep rock) fires a gun. After how long will he hear its echo ? Speed of sound in air is 330 m/s.


A man is kidnapped, blindfolded and imprisoned in a big room. How could the man tell if he was in : a bare room


A man is kidnapped, blindfolded and imprisoned in a big room. How could the man tell if he was in : a furnished room


An echo-sounder in a trawler (fishing boat) receives an echo from a shoal of fish 0.4 s  after it was sent. If the speed of sound in water is 1500 m/s, how deep is the shoal ?


Which of the following device does not work on the multiple reflections of sound waves ?


Explain by giving a scientific reason.

We cannot hear the echo produced in a classroom. 


Answer the following question in your own words. 

What is an echo?


How can you calculate the speed of sound using echo?


To hear an echo, the minimum distance of the obstacle from the source of sound must be ______.


Answer the following question in your own words. 

What factors are important to get a distinct echo?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×