> Q. A steel wire of length 4.7m and cross sectional area $3 times 10^{-6}m^2$ stretches by the amount as a copper wire of length 3.5m and cross-sectional area of $4 times 10^{-6}m^2$ under a given load. The ratio of young’s modulus of steel to that of copper is – LIVE ANSWER TODAY

Q. A steel wire of length 4.7m and cross sectional area $3 times 10^{-6}m^2$ stretches by the amount as a copper wire of length 3.5m and cross-sectional area of $4 times 10^{-6}m^2$ under a given load. The ratio of young’s modulus of steel to that of copper is

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A steel wire of length 4.7m and cross sectional area $3 times 10^{-6}m^2$ stretches by the amount as a copper wire of length 3.5m and cross-sectional area of $4 times 10^{-6}m^2$ under a given load. The ratio of young’s modulus of steel to that of copper is

Solution:

$frac{Delta l}{l} times 100$ = 0.2

$A = frac{F}{y left( frac{Al}{l} right)}$

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