The figure shows hysteresis curves for soft iron and stell.

Which among the two is the hysteresis loop of soft iron?

Elasticity is the property of a body by which it regains its original state on the removal of the deforming force. The figure given below shows the stress-strain curve for a given material. What are the Youngs modulus and approximate yield strength for this material?

The figure shows a liquid placed on the pole pieces of two magnets. Which magnetic behaviour is exhibited by the liquid?

A long resistance wire is stretched between two iron nails. A battery of 2V is applied across the wire. One end of a torch bulb is connected to nail and other end is made in contact as shown in figure. - If this wire slides over the resistance wire from nail 1 to nail 2, what happens to the brightness of the bulb.