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14. waves and sound — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics14. waves and sound1 Mark
MCQ
A wave is represented by the equation $y = 0.5\sin (10t - x)m$. It is a travelling wave propagating along the $+ x$ direction with velocity  .... $m/s$
  • ✓
    $10$
  • B
    $20$
  • C
    $5$
  • D
    None of these
✓

Answer

Correct option: A.
$10$
a
(a) The velocity of wave
$v = \frac{{\omega \,({\rm{Co - efficient of }}t{\rm{)}}}}{{k\,({\rm{Co - efficient of }}x)}} = \frac{{10}}{1} = 10\,m/s$

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