Three similar wires of frequency $n_1, n_2$ and $n_3$ are joined to make one wire. Its frequency will be
Three similar wires of frequency $n_1, n_2$ and $n_3$ are joined to make one wire. Its frequency will be
- [AIPMT 2000]
- A
$n = {n_1} + {n_2} + {n_3}$
- B
$\frac{1}{n} = \frac{1}{{{n_1}}} + \frac{1}{{{n_2}}} + \frac{1}{{{n_3}}}$
- C
$n = n _{1} \times n _{2} \times n _{3}$
- D
$n =\frac{ n _{1}+ n _{2}+ n _{3}}{3}$
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