Question

a wire of hundred centimetre long is bent into an Arc of a circle with a gap of 2 cm at zero degree centigrade on heating to eighty degree centigrade the gap is 2.02 CM the linear coefficient of expansion of the material of the wire is

Answer 1

0.02 = 100( 1 + coefficient 353)

change in length= original length( 1+ coefficient × change in temperature)

Answer 2

Answer:

The answer is 0.000125/ k

Explanation:

We have to use alpha = l2 - l1 / l1(t2-t1)