A wire having a linear mass density is kept under a tension of

PHYSICS · Single correct · CBSE · Physics · Waves · Waves

Problem

A wire having a linear mass density

0.1\,\mathrm{kg/m}

is kept under a tension of

490\,\mathrm{N}

. It resonates at a frequency of

400\,\mathrm{Hz}

, and the next higher frequency is

450\,\mathrm{Hz}

. Find the length of the wire. (1)

0.4\,\mathrm{m}

(2)

0.7\,\mathrm{m}

(3)

0.6\,\mathrm{m}

(4)

0.49\,\mathrm{m}