-
Two waves, each of amplitude 1.5 mm and frequency 10 Hz, are travelling in opposite
direction with a speed of 20 mm/s. The distance in mm between adjacent nodes is :
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- 1.0
- 1.2
- 1.5
- 2.0
- 1.0
Correct Option: A
Since the amplitudes, frequency and the speed of both the waves are in same, hence the wavelength of the composite wave will be the same as the single wave. The distance between the adjacent nodes will be
a 2
, Speed of the wave, i.e., V = nl. Or, 20 = 10l.
So, l = 2 mm. Therefore,
a 2
= 1 mm
