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2 \times 10^{11} N m^{- 2}

4 \times 10^{8} N m^{- 2}

5 \times 10^{11} N m^{- 2}

5 \times 10^{10} N m^{- 2}

6 \times 10^{11} N m^{- 2}

ANS : 2

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