In each of the following questions, a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements, mark the correct answer as-

Assertion (A): A small force can affect on same as large force.

Reason (R): The moment of a force is the product of force and its perpendicular distance from the axis of rotation.

Codes:

Consider the following statements:

I. A body having constant linear velocity may have some angular speed with respect to a point.

II. A force passing through the centre of rotation can produce moment to a body.

III. Torque has the SI unit N-m.

IV. Centre of gravity is point where entire mass of the body is assumed to be concentrated.

Which one of the following options are correct?

If ${\mathrm{I}}_{\mathrm{A}}$ and ${\mathrm{I}}_{\mathrm{B}}$ are the moments of inertia of a body about two axes $\mathrm{A}$ and $\mathrm{B}$ respectively. The axis $\mathrm{A}$ passes through the centre of mass of the body but $\mathrm{B}$ does not. Consider the following given below

I. ${\mathrm{I}}_{\mathrm{A}}<{\mathrm{I}}_{\mathrm{B}}$.

II. If ${\mathrm{I}}_{\mathrm{A}}<{\mathrm{I}}_{\mathrm{B}}$, the axes are parallel.

III. If the axes are parallel, ${\mathrm{I}}_{\mathrm{A}}<{\mathrm{I}}_{\mathrm{B}}$.

IV. If the axes are not parallel, ${\mathrm{I}}_{\mathrm{A}}\ge {\mathrm{I}}_{\mathrm{B}}$.

Which one of the following options is/are correct?

The elastic potential energy of a body is:

I. Work done by the external force against the restoring force.

II. Work done against the external force by the deforming force.

III. The sum of work done by the external force and the deforming force.

Which one option is true?

Consider the following statements:

I. The SI unit of Young's modulus of elasticity is ${\mathrm{Nm}}^{-2}$ or pascal.

II. Young's modulus is involved in solids only.

III. The SI unit of Bulk modulus of elasticity is ${\mathrm{Nm}}^{-2}$ or pascal.

IV. Bulk modulus is involved in solids, liquids and gases.

Which of the statements given above are correct?

Assertion (A): The solids are more elastic and gases are least elastic.

Reason (R): It is so because for the given stress the gases are more compressible than of solids.

Codes:

Consider the following statements:

I. Young's modulus of elasticity is defined as the ratio of normal stress to the longitudinal strain within the elastic limit.

II. Bulk modulus of elasticity is defined as the ratio of normal stress to the volumetric strain, within the elastic limit.

Which of the statement(s) given above is/are correct?

Consider the following statements and select the correct code:

I. For a given stress, the strain produced in glass is much less than that in rubber.

II. In plastic materials, the force of cohesion are very small.

III. Elastic limit is the smallest stress, which results in permanent distortion.

Which of the statement(s) given above is/are correct?