Question

Match the options in column $I$ with appropriate reasons in column $II$ .

	Column - I		Column - II
$(A)$	The shape of rubber heel changes under stress	$(p)$	Young’s modulus of elasticity is involved
$(B)$	In a suspended bridge, there is a strain in the ropes by the load of the bridge	$(q)$	Bulk modulus of elasticity is involved
$(C)$	In an automobile tyre, when air is compressed, the shape of tyre changes	$(r)$	Modulus of rigidity is involved
$(D)$	A solid body is subjected to a deforming force	$(s)$	All the moduli of elasticity are involved

• A. $A-q,B-r,C-s,D-p$
• B. $A-p,B-q,C-r,D-s$
• C. $A-r,B-q,C-p,D-s$
• D. $A-r,B-p,C-q,D-s$

Answer 1

Answer: (D)

The shape of rubber heel changes under stress involves modulus of rigidity as shape change without change in volume.
A – r
The strain in the ropes of a suspended bridge involves Young’s modulus of elasticity as the extension of ropes takes place due to the load of the bridge.
B – p
In a automobile tyre, bulk modulus of elasticity is involved, as the volume if the air in the tyre changes.
C – q
A solid body when subjected to a deforming force, all the moduli of elasticity are involved.