Frequency of tuning forks are 320 Hz and 325 Hz. If they are sounded together, the beat period is

  • Option 1)

    5 second

  • Option 2)

    6 second

  • Option 3)

    0 second

  • Option 4)

    0.2 second

 

Answers (1)

As we learnt in 

Beat Frequency -

\Delta \nu = \left | \nu _{1}-\nu _{2} \right |

module of \left ( \nu _{1} -\nu _{2}\right )

 

- wherein

Where \nu _{1} \: and\: \nu _{2} are frequency of two wave differ slightly  in value of frequency.

 

 Beat frequency = \left | \nu_{2}-\nu_{1} \right |\:=5

\therefore beat period = \frac{1}{\Delta \nu} = 0.2 second

 


Option 1)

5 second

This option is incorrect.

Option 2)

6 second

This option is incorrect.

Option 3)

0 second

This option is incorrect.

Option 4)

0.2 second

This option is correct.

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