Advertisements
Advertisements
Question
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
Solution
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
RELATED QUESTIONS
Suggest measures to avoid noise pollution in classroom.
State any four measures to control noise pollution.
List two major harmful effects of the following:
Prolonged noise such as the one produced by crackers.
Mention any two measures to minimise noise pollution.
Explain the Term: Noise pollution
With reference to noise pollution, answer the following:
How does traffic contribute to noise pollution?
With reference to noise pollution, answer the following:
Why are the construction sites considered as worse than factories in their contribution to noise pollution?
Mention a few measures to be taken to reduce the effect of noise pollution.
Suggest three measures to limit noise pollution in your locality.
People routinely working in noisy places are not much affected by noise.
