When a weight of 5 kg is suspended from a copper wire of length 30 m and radius 0.5 mm the length of the wire increases by 2.4 cm. If the radius is doubled the extension produced is:
1.1.2 cm
2.0.6 cm
3.0.3 cm
4.0.15 cm
Answer:2
Posted Date:-2021-09-25 23:05:18