30 cm length of the wire gives note of f...

30 cm length of the wire gives note of frequency 300 Hz when plucked in the middle . What length of the wire will produce a note a frequency 400 Hz for constant tension ?

15cm

22.5cm

45cm

60cm

Text Solution

Verified by Experts

The correct Answer is:

`l_2/l_1 =n_2/n_1 therefore l_2 = (30xx300)/(400) = 22.5cm`

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