Advertisements
Advertisements
Question
Answer the following question in your own words.
Study the construction of the Golghumat at Vijapur and discuss the reasons for the multiple echoes produced there.
Advertisements
Solution
In Vijaypur, Karnataka, there is an ancient site called Golghumat. The inside of its big circle is smooth and round, with a cap on top of it. Since the structure is circular, sound waves that start at one point are mirrored many times before going back to the same point, where they are heard more than once.
APPEARS IN
RELATED QUESTIONS
The minimum distance between the source and the reflector in air. So that an echo is heard is approximately equal to ______.
Explain why, the flash of lightning reaches us first and the sound of thunder is heard a little later.
Name three devices which work on the reflection of sound.
Name the device which is used to address a small gathering of people.
Fill in the blank with suitable word :
An echo is simply a ................... sound.
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 ?
Why do we hear more clearly in a room with curtains than in a room without curtains ?
What is meant by 'reflection of sound' ? What type of surfaces are the best for reflecting sound ?
What is an echo ? How is echo formed ?
A man is kidnapped, blindfolded and imprisoned in a big room. How could the man tell if he was in : a furnished room
What is an echo?
State two conditions necessary for hearing an echo.
______ allows bats to navigate through dark caves and find insects for food.
What is an echo? Write the conditions to hear an echo.
Numerical problems:
An echo returned in 3s. What is the distance of the reflecting surface from the source given that the speed of sound is 330 ms-1?
Rohan conducted experiments on echo in different media. He observed that a minimum distance of 'x' meters is required for the echo to be heard in oxygen and 'y' meters in benzene. Compare 'x' and 'y'. Justify your answer.
Speed of sound in oxygen: 340 ms-1
Speed of sound in benzene: 200 ms-1
