Question

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R:
S-1 \(\rightarrow\) Steel is used in construction of a bridge and house.
S–2 \(\rightarrow\) Modulus of elasticity of steel is high.
In the light of the above statements, choose the correct answer from the options given below

• A. S-1 & S-2 both are true
• B. S-1 & S-2 both are true
• C. S-1 is false & S-2 is true
• D. S-1 & S-2 both are false

Answer 1

The Correct Option is A

To address this question, we need to assess each statement separately and then determine if they are true, and if S-2 serves as a correct explanation for why S-1 is true.

1. Analysis of S-1: Steel is used in construction of a bridge and house.
   • Steel is a widely used material in the construction industry, especially in bridges and buildings, because of its strength, durability, and flexibility.
   • Its ability to withstand heavy loads and stresses makes it an ideal choice for constructing bridges and buildings that require structural integrity.
   • Thus, statement S-1 is true.
2. Analysis of S-2: Modulus of elasticity of steel is high.
   • Modulus of elasticity, also known as Young's modulus, is a measure of the stiffness of a material.
   • Steel indeed has a high modulus of elasticity, which means it can endure considerable bending or stretching before deforming permanently. This is a crucial property for construction materials, which must reliably maintain form under stress.
   • Therefore, statement S-2 is also true.

Now, let's determine if S-2 is the correct reason for S-1.

3. Linking S-1 and S-2:
   • The high modulus of elasticity of steel is one of the reasons it is chosen for construction, as it provides the necessary stiffness and elasticity, ensuring stability and strength of the structure while accommodating loading stresses.
   • Therefore, not only are both statements true, but S-2 also offers a valid explanation for S-1.

Given this analysis, the correct choice from the provided options is: S-1 & S-2 both are true.