Physics · JEE | MECHANICAL PROPERTIES OF SOLIDS
हिन्दीGiven below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Steel is more elastic than copper, brass, and aluminium. Reason (R): For a given stress, the strain produced in steel is smaller compared to copper, brass, and aluminium, meaning steel has a higher Young's modulus. In the light of the above statements, choose the correct answer from the options given below:
View Answer & Solution
Correct answer · Option A
Both (A) and (R) are true and (R) is the correct explanation of (A).
Explanation
Steel requires a larger force to produce the same fractional change in length because its Young's modulus is greater, making it more elastic.