मराठी
महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (मराठी सेमी-इंग्रजी) इयत्ता ९ वी

The incidence of ______ in daily life shows that the velocity of sound is less than the velocity of light. - Science and Technology

Advertisements
Advertisements

प्रश्न

The incidence of ______ in daily life shows that the velocity of sound is less than the velocity of light.

रिकाम्या जागा भरा
Advertisements

उत्तर

The incidence of thunderstorms in daily life shows that the velocity of sound is less than the velocity of light.

Explanation:

In a thunderstorm, we see the flash of lightning before we hear the sound of thunder. This happens because light travels much faster than sound. Light reaches our eyes almost instantly, while sound takes more time to reach our ears. Therefore, thunderstorms show that the velocity of sound is less than the velocity of light.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 12: Study of Sound - Exercise [पृष्ठ १३७]

APPEARS IN

बालभारती Science and Technology [English] 9 Standard Maharashtra State Board
पाठ 12 Study of Sound
Exercise | Q 1. c. | पृष्ठ १३७

संबंधित प्रश्‍न

During a thunderstorm, the sound of a thunder is heard after the lightning is seen. Why?


Can sound travel through solids and liquids ? In which of these two does it travel faster ?


A boy fires a gun and another boy at a distance of 1020 m hears the sound of firing the gun 3 s after seeing its smoke. Find the speed of sound.


Guess which sound has a higher pitch:


If you want to hear a train approaching from far away, why is it more convenient to put the ear to the track?


What is the speed of sound :
(a) in air?
(b) in water?
(c) in iron?


What name is given to those aircrafts which fly at speeds greater than the speed of sound?


A sound signal of 128 vibrations per second has a wavelength of 2.7 m. Calculate the speed with which the wave travels.


A worker lives at a distance of 1.32 km from the factory. If the speed of sound in air be 330 m/s, how much time will the sound of factory siren take to reach the worker?


If the speed of a wave is 340 m/s and its frequency is 1700 Hz, then λ for this wave in cm will be :


The speeds of sound in four different media are given below. Which of the following is the most likely speed in m/s with which the two under water whales in a sea talk to each other when separated by a large distance?


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


The speed of highly penetrating ultrasonic waves is :


Nita heard the sound of lightning after 4 seconds of seeing it. What was the distance of the lightning from her?

(The velocity of sound in air is 340 m/s.)


Sunil is standing between two walls. The wall closest to him is at a distance of 660 m. If he shouts, he hears the first echo after 4 s and another after another 2 seconds.

  1. What is the velocity of sound in air?
  2. What is the distance between the two walls? 

Helium gas is filled in two identical bottles A and B. The mass of the gas in the two bottles is 10 gm and 40 gm respectively. If the speed of sound is the same in both bottles, what conclusions will you draw?


Write the formula for speed of sound in a gas using Laplace correction.


Velocity of sound in the atmosphere of a planet is 500 ms–1. The minimum distance between the sources of sound and the obstacle to hear the echo should be


On which factors does the speed of sound in the solid medium depend?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×