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प्रश्न
Consider the statement given below and choose the correct option.
Assertion: When lightning strikes, the sound is heard a little after the flash is seen.
Reason: The velocity of light is greater than that of the sound.
विकल्प
Both assertion and reason are true and the reason is the correct explanation of assertion.
Both assertion and reason are true but reason is not the correct explanation of assertion.
Assertion is true but reason is false.
Assertion is false but reason is true.
Both Assertion and reason are false.
उत्तर
Both assertion and reason are true and the reason is the correct explanation of assertion.
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संबंधित प्रश्न
Select the correct alternative :
We can hear sound of frequency
In an experiment, Anhad studies sound waves. He sets up a loudspeaker to produce sound as shown below :
Anhad adjusts the signal to the loudspeaker to give a sound of frequency 200 Hz.
(a) What happens to the air in-between Anhad and the loudspeaker ?
(b) Explain how Anhad receives sound in both ears.
Draw a displacement-time graph for water wave.
How does the speed of sound depend on (i) Amplitude, and (ii) Wavelength?
What cause sound? Why do we require a material medium for the transmission of sound?
Distinguish between light and sound waves. What are the consequences of the large difference in the speed of sound and that of light? Briefly explain them.
Sound travels in the form of ______.
Number of vibrations produced in one second is ______.
Longitudinal waves are produced in solids liquids and also in gases.
Name the waves used for sound ranging. State one reason for their use.
