Same chapter2 marksDifficulty: Easy
What is meant by resonance? Give one everyday example.
Sound
2 marksDifficulty: Easy
Why is the speed of sound greater in solids than in gases?
Original Khojo Papers practice question — not from a past board paper.
Answer
Sound travels as a mechanical wave passed on by the vibration of particles. In a solid the particles are much closer together and the forces between them are far stronger, so a disturbance is handed on much more quickly than in a gas where the particles are far apart.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The speed of sound in steel is about 5000 m s−1 against about 340 m s−1 in air.
Related questions
From the same topic and chapter, at a similar level.
Same chapter1 markDifficulty: Easy
The pitch of a sound depends on its:
Sound
Same chapter2 marksDifficulty: Easy
A sound wave of frequency 500 Hz travels in air at 340 m s−1. Calculate its wavelength.
Sound
Same chapter1 markDifficulty: Easy
Resonance occurs when the frequency of the applied periodic force is:
Sound
Same chapter2 marksDifficulty: Easy
A person standing 165 m from a cliff claps and hears the echo after 1 second. Calculate the speed of sound in air.
Sound
Same chapter3 marksDifficulty: Medium
A person claps and hears the echo from a cliff after 2 seconds. If the speed of sound is 340 m s−1, find the distance of the cliff.
Sound