What is young's modulus of perfectly elastic body ?

A perfectly elastic body _____.

What is a perfectly plastic body ?

What is the bulk modulus of a perfectly rigid body ?

What is absorbing power of a perfectly black body ?

lf the diameter of the wire is doubled keeping its length same, what happens to its young's modulus of elasticity?

Does a perfectly elastic body exit in nature ?

What is perfectly elastic collision ?

what is emissivity of a perfectly black body ?

How much is the young's modulus of a liquid ?

What is a plastic body ?