Explain why there is usually a time delay between observing a flash and hearing a thunder?
(N/A) The speed of light in air is approximately $3 \times 10^8 \text{ m/s}$, whereas the speed of sound in air is approximately $343 \text{ m/s}$ at room temperature.
Because the velocity of light is significantly greater than the velocity of sound, the light from the lightning flash reaches the observer almost instantaneously.
In contrast, the sound waves produced by the thunder travel much slower, resulting in a noticeable time delay between seeing the flash and hearing the thunder.
Because the velocity of light is significantly greater than the velocity of sound, the light from the lightning flash reaches the observer almost instantaneously.
In contrast, the sound waves produced by the thunder travel much slower, resulting in a noticeable time delay between seeing the flash and hearing the thunder.
Explore More
Similar Questions
The bells of a temple are made of large size. It is for
Medium
View SolutionGive reasons for the following:
$(a)$ The reverberation time of a hall used for speeches should be very short.
$(b)$ $A$ vibrating body produces sound. However,no sound is heard when a simple pendulum oscillates in air.
$(c)$ Sounds of same loudness and pitch but produced by different musical instruments like a violin and flute are distinguishable.
$(a)$ The reverberation time of a hall used for speeches should be very short.
$(b)$ $A$ vibrating body produces sound. However,no sound is heard when a simple pendulum oscillates in air.
$(c)$ Sounds of same loudness and pitch but produced by different musical instruments like a violin and flute are distinguishable.
Medium
View SolutionIf the frequency of a tuning fork is $400 \, Hz$ and the speed of sound in air is $340 \, m s^{-1}$,find how far sound travels when the tuning fork makes $16$ vibrations. (in $, m$)
Medium
View SolutionState the relationship between frequency and time period of a wave. The wavelength of vibrations produced on the surface of water is $2 \, cm$. If the wave velocity is $16 \, m s^{-1}$, find its frequency and time period.
Easy
View SolutionSound produced by a thunderstorm is heard $10 \, s$ after the lightning is seen. Calculate the approximate distance of the thunder cloud. (Given speed of sound $= 340 \, m \, s^{-1}$.) (in $, m$)
Easy
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo