Practice question

Stress: Stress = FA = 3002×10−6 = 1.5×108N/m2. Young's modulus: Y = StressStrain. Strain: Strain = StressY = 1.5×1089×1010≈1.67×10−3. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 1.67×10−3. This satisfies dimensional consistency and physical conditions given, so option A is scientifically correct.