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Match List-I with List-II : List-I (A) A force that restores an elastic body of unit area to its original state (B) Two equal and opposite forces parallel to opposite faces (C) Forces perpendicular everywhere to the surface per unit area same every where (D) Two equal and opposite forces perpendicular to opposite faces List-II (I) Bulk modulus (II) Young's modulus (III) Stress (IV) Shear modulus

1. (A)-(II), (B)-(IV), (C)-(I), (D)-(III)
2. (A)-(IV), (B)-(II), (C)-(III), (D)-(I)
3. (A)-(III), (B)-(IV), (C)-(I), (D)-(II)
4. (A)-(III), (B)-(I), (C)-(II), (D)-(IV)

Correct answer: (A)-(III), (B)-(IV), (C)-(I), (D)-(II)

Solution

The correct option matches each description with the appropriate mechanical property: (A) describes stress, which is the force per unit area; (B) refers to shear modulus, which relates to forces parallel to surfaces; (C) corresponds to bulk modulus, which deals with uniform pressure applied; and (D) aligns with Young's modulus, which measures the ability to withstand changes in length when under lengthwise tension or compression.

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