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Physics Question on Sound Wave

When two sound waves of slightly different ftequencies f1f_1 and f2f_2 are sounded together, then the time interval between successive maxima is

A

1f1+f2\frac1{f_1 +f_2}

B

1f1+1f2\frac1{f_1} +\frac1{f_2}

C

1f1−f2\frac1{f_1 -f_2}

D

1f1f2\frac1{f_1 f_2}

E

1f1−1f2\frac1{f_1} -\frac1{f_2}

Answer

1f1+1f2\frac1{f_1} +\frac1{f_2}

Explanation

Solution

The correct option is (B) : 1f1+1f2\frac1{f_1} +\frac1{f_2}