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13. oscillations — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics13. oscillations1 Mark
MCQ
In a sinusoidal wave, the time required for a particular point to move from maximum displacement to zero displacement is $0.170\,$second. The frequency of the wave is .... $Hz$
  • ✓
    $1.47$
  • B
    $0.36$
  • C
    $0.73$
  • D
    $2.94$
✓

Answer

Correct option: A.
$1.47$
a
(a) Time required for a point to move from maximum displacement to zero displacement is

$t = \frac{T}{4} = \frac{1}{{4n}}$
==> $n = \frac{1}{{4t}} = \frac{1}{{4 \times 0.170}} = 1.47\,Hz$

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