Waves - Result Question 16

16. In a sinusoidal wave, the time required for a particular point to move from maximum displacement to zero displacement is 0.170 sec. The frequency of the wave is

[1998]

(a) $1.47 Hz$

(b) $0.36 Hz$

(c) $0.73 Hz$

(d) $2.94 Hz$

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Answer:

Correct Answer: 16. (a)

Solution:

  1. (a) Time taken to move from maximum to zero displacement $=\frac{T}{4}$

$\therefore$ Time period $T=4 \times 0.170$ second

$\therefore$ Frequency, $n=\frac{1}{T}=\frac{1}{4 \times 0.170}=1.47 Hz$