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Q.

To determine the Young's modulus of a wire, the formula is $Y = \frac{F}{A} \times \frac{L}{ΔL}$ ; where L = length, A = area of cross - section of the wire, $ΔL$ = change in length of the wire when stretched with a force F. The conversion factor to change it from CGS to MKS system is

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a

0.1

b

1

c

0.01

d

10

answer is C.

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Detailed Solution

$Y = \frac{F}{A} \cdot \frac{L}{Δ L} = \frac{dyne}{{cm}^{2}} = \frac{10^{- 5} N}{10^{- 4} m^{2}} = 0.1 N / m^{2}$

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