Question

if the length of the wire and mass suspended are doubled in a young's modulus experiment then young's modulus of wire a.unchanged b.doubled c.4 times d.16times

Answer 1

a.unchanged is the answer

Answer 2

The Young's modulus of the wire remains unchanged on the doubling length of the wire and the suspended mass (option-a).

• Young's modulus is an intrinsic property of a substance.
• It shows how much a body can stretch itself and deform itself, under stress or tension.

• Its mathematical expression is:        

       Young's modulus = stress / strain

• It depends on the stress or pressure applied to any substance and the temperature.
• It is independent of the length, mass, and area of a substance., this means altering the size, length or mass doesn't affect Young's modulus of that substance.
• Therefore, on increasing or decreasing the length of a wire and on changing the mass suspended, there will be no effect on Young's modulus of the wire.