A body of mass M is attached to the lower end of a metal wire, whose upper end is fixed. The elongation of the wire is l. a) Loss in gravitational potential energy of M is Mg l b) The elastic potential energy stored in the wire is Mgl c) The elastic potential energy stored in the wire is 1//2 Mgl d) Heat produced is 1//2 Mgl

A body of mass M is attached to the lower end of a metal wire, whose u

1.	A body of mass M is attached to the lower end of a metal wire, whose upper end is fixed. The elongation of the wire is l. a) Loss in gravitational potential energy of M is Mg l b) The elastic potential energy stored in the wire is Mgl c) The elastic potential energy stored in the wire is 1//2 Mgl d) Heat produced is 1//2 Mgl
Answer» only a, B are true only b, C are true only a, d are true only a, c, d are true Answer :4