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

Gujarat BoardEnglish MediumSTD 11 SciencePhysics14. waves and sound1 Mark
MCQ
Frequency of tuning fork $A$ is $256\,Hz$ . It produces four $beats/sec$ . with tuning fork $B$ . When wax is applied at tuning fork $B$ then $6\,beats/sec$ . are heard. By reducing little amount of wax $4\,beats/sec$ . are heard. Frequency of $B$ is .... $Hz$
  • A
    $250$
  • ✓
    $260$
  • C
    $252$
  • D
    $256$
✓

Answer

Correct option: B.
$260$
b

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