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.
What is the safe limit of sound level in dB for our ears?
Name one source of sound causing noise pollution.
Explain the Term: Noise pollution
Which of the following problems is not created by noise pollution?
With reference to noise pollution, answer the following:
How do the airplanes cause noise pollution?
Short answer type question
Dandiya raas is not allowed after 10.00 pm. Why?
What steps should be taken to reduce the effect of noise pollution?
Name two harmful effects of noise pollution.
People routinely working in noisy places are not much affected by noise.
