Q. 64.7( 3 Votes )

In the curve (Fig.12.1) half the wavelength is


A. A B

B. B D

C. D E

D. A E

Answer :

As one wavelength = one crest + one trough,

half the wavelength = one crest or


one trough = AC (or CE).


Further, AC = AB + BC = BC + CD = BD (as AB = CD)

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