Question

Consider the.following statements.
1. The SI unit of Young's modulus of elasticity is $N{m}^{-}$ or pascal.
2. Young's modulus is involved in solids only.
3. The SI unit of Bulk modulus of elasticity is $N{m}^{-}$ or pascal.
4. Bulk modulus is involved in solids, liquids and gases.
Which of the statements given above are correct?

• A. 1, 2 and 3
• B. 2, 3 and 4
• C. 1, 3 and 4
• D. 1, 2, 3 and 4

Answer 1

The correct option is D 1, 2, 3 and 4

SI unit of all the Modulus' is $N{m}^{-1}orpascal$

Young's Modulus is defined only for Solids, while Bulk Modulus is defined for all three forms, i.e. Solids, liquids, and gases.

So all statements are correct.