A sound level $I$ is greater by $3.0103 d B$ from another sound of intensity $10 n W c m^{- 2}$ . The absolute value of intensity of sound level $I$ in $W m^{- 2}$ is :

2.0 \times 10^{- 4}

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2 \times 10^{- 4}

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2.0 \times 10^{- 2}

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2.5 \times 10^{- 2}

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A sound level I is greater by 3.0103 dB from another sound of intensity 10 nW cm−2. The absolute value of intensity of sound level I in Wm−2 is :