- Exam
- JEE Main
- Year
- 2023
- Date
- 24 January
- Shift
- Evening Shift
- Subject
- Physics
- Chapter
- Mechanical Properties of Solids
JEE Main 2023 · 24 January · Evening Shift · Physics · Mechanical Properties of Solids
Given below are two statements: one is labelled as Assertion A and...
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion (A) : Steel is used in the construction of buildings and bridges.
Reason (R) : Steel is more elastic and its elastic limit is high.
In the light of above statements, choose the most appropriate answer from the options given below
Options
- ABoth and are correct and is the correct explanation of
- BBoth and are correct but is NOT the correct explanation of
- C is correct but is not correct
- D is not correct but is correct
Correct answer
A. Both and are correct and is the correct explanation of
Step-by-step solution
The relationship between Young's modulus, stress, and strain is:
Since the elastic modulus of steel is more, for the same amount of stress, the strain will be less resulting in less deformation of buildings and bridges. Therefore, steel is used for construction of large structures.
Hence, both assertion and reason are correct and the reason correctly explains the assertion.