Distinguish between crests and troughs.
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crest :- the position of maximum upward displacement is called crest
trough :- the position of maximum downward displacement is called trough
trough :- the position of maximum downward displacement is called trough
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✍ It is the the hump or elevation formed in a medium when a transverse wave propagates in it.
✍ The centre of the crest is the position of maximum displacement of the particles in the positive direction.
✍ It is the depression or hollow formed in a medium in transverse wave propagates in it .
✍ The centre of Troughs is the position of maximum displacement of the particles in the negative direction.
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