The ratio stress/strain remains constant for small deformation of a metal wire. When the deformation is made larger, will this ratio increase or decrease ?

A long metal rod is bent to form a ring with a small gap if this is heated, will this gap increase or decrease?

On gradual loading , stress - strain relationship for a metal wire is as follows . Within proportionality limit , stress prop strain or, "Stress"/"strain" = a constant for the material of wire. If "Stress"/"Strain" is x in elastic region and y in the region of yield , then

By increasing the cost of entry ticket to a fair in the ratio 10 : 13 , the number of visitors to the fair has decreased in the ratio 6 : 5 . In what ratio has the total collection increased or decreased ?

When a metal wire elongates by hanging a load on it, the gravitational potential energy is decreased.

On gradual loading , stress - strain relationship for a metal wire is as follows . Within proportionality limit , stress prop strain or, "Stress"/"strain" = a constant for the material of wire. Two wires of same material have length and radius (L,r) and (2L , r/2) . The ratio of their young's modulii is

Assertion: Ratio of stress and strain is always constant for a substance. Reason : This ratio is called modulus of elasticity .

If each data point in a set is increased by 7, does the set's standard deviation increase, decrease, or remain constant?

Two parallel wires A and B are fixed to a right support at the upper ends and are subjected to the same load at the lower ends. The lengths of the wire are in the ratio 4:5 and their radius are in the ratio 4:3 . The increase in length of the wire A is 1mm.Calculate the increase in length of the wire B.