Physical Properties of Matter (Physics)

Among the given options, kerosene is liquid, which has no fixed shape but it has a fixed volume. Carbon steel is a solid and has definite shape and volume, while krypton is a gas which has neither a definite shape nor volume.

The Young's modulus (E), also known as modulus of elasticity, is a property of the material that tells us how easily it can stretch and deform and is defined as the ratio of tensile stress to tensile strain. Where stress is the amount of force applied per unit area and strain is extension per unit length.

The Young's modulus for steel is much more than that for rubber. For same longitudinal strain, steel will have greater tensile stress than that of rubber. Thus, statement (1) is incorrect.

The shear modulus, also known as the modulus of rigidity, is a material property that measures the stiffness of a solid material in response to shear stress. It describes a material's ability to resist deformation when subjected to forces acting parallel or tangentially to its surface.

It is the measure of the rigidity of the body, given by the ratio of shear stress to shear strain. The stretching of a coil changes its shape. Hence, it is determined by its shear modulus. Thus, statement (2) is correct.

The shape of a drop of rain is constrained by the surface tension, which tries to give it the shape for which the surface area is minimum for the given volume. The spherical shape has the minimum surface area. That's why rain drops acquire spherical shape.

The shape of a drop of rain is constrained by the surface tension, which tries to give it the shape for which the surface area is minimum for the given volume. The spherical shape has the minimum surface area. That's why rain drops acquire spherical shape.

The shape of a drop of rain is constrained by the surface tension, which tries to give it the shape for which the surface area is minimum for the given volume. The spherical shape has the minimum surface area. That's why rain drops acquire spherical shape.

The shape of a drop of rain is constrained by the surface tension, which tries to give it the shape for which the surface area is minimum for the given volume. The spherical shape has the minimum surface area. That's why rain drops acquire spherical shape.

Oil spreads on water surface because the surface tension of oil is less than water. Therefore, when oil is poured over water, the greater value of surface tension of water pulls oil in all directions, and as such it spreads on the water.

Kerosene oil floats on water because its density is less than the density of water.

Soap bubbles are large because when soap dissolved in water its surface tension is reduced. The pressure inside a soap bubble is more than atmospheric pressure.