A sonometer wire under a tension of is in unison with a tuning fork of frequency

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

Problem

A sonometer wire under a tension of

10\ \text{kg-wt}

is in unison with a tuning fork of frequency

320\ \text{Hz}

. To make the wire vibrate in unison with a tuning fork of frequency

256\ \text{Hz}

, the tension should be altered by (1)

3.6\ \text{kg-wt}

decreased (2)

3.6\ \text{kg-wt}

increased (3)

6.4\ \text{kg-wt}

decreased (4)

6.4\ \text{kg-wt}

increased