Question:
The maximum elongation of a steel wire of 1 m length if the elastic limit of steel and its Young modulus 8 × 108       
 nm^-2  and 2 × 1011 nm^-2

(1) 4 mm

(2) 0.4 mm 

(3) 40 mm

(4) 8mm                                NEET -2024

Solution:                
The maximum elongation of a steel wire of 1 m length if the elastic limit of steel and its Young’s modulus 8 × 108 nm^-2 and 2 × 1011 nm^-2

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