Advertisements
Advertisements
प्रश्न
Boojho saw a cracker burst at night at a distance from his house. He heard the sound of the cracker a little later after seeing the cracker burst. Give reason for the delay in hearing the sound.
Advertisements
उत्तर
The light travels faster than sound. So, the light from the cracker reaches faster than that of sound of the cracker.
Speed of light in air = 3 × 108 m/s
Speed of sound in air = 330 m/s
APPEARS IN
संबंधित प्रश्न
List sources of noise pollution in your surroundings.
Explain in what way noise pollution is harmful to humans.
State any four measures to control noise pollution.
What do you do in the following situations:
Exposed to a series of firecrackers with high sound level.
List two major harmful effects of the following:
Prolonged noise such as the one produced by crackers.
What should we do?
The silencer of a motorcycle is broken.
What are the hazards of noise pollution?
Among the following which one is not polluted by noise pollution?
Mention any two ways to control noise pollution.
Define the following term:
Noise
