plz send me practical based question from sound chapter class 9 with answers..
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1. Depict a sound wave in graphic form and mention crest, trough , wavelength and amplitude of the wave in it.
2. What is the audible range of a human ear. Show diagrammatically a soft sound and loud sound.
3. Why are the ceilings of concert halls curved?
4. Define reverberations.
1. Depict a sound wave in graphic form and mention crest, trough , wavelength and amplitude of the wave in it.
2. What is the audible range of a human ear. Show diagrammatically a soft sound and loud sound.
3. Why are the ceilings of concert halls curved?
4. Define reverberations.
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monanik05:
Which board?
cbse
oo
hmm
how was ur exam mate??
as usual bad XD
wbu?
as usual BEST
My exams are over now
lol u r great
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