The energy required to break one bond in DNA is 10^-20 J. This value in eV is nearly :

1. 6

2. 0.6

3. 0.06

4. 0.006

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Answer: 3. 0.06

Convert joules to eV using $1\ \text{eV}=1.6\times10^{-19}$ J.

$$E=\frac{10^{-20}}{1.6\times10^{-19}}=0.0625\approx0.06\ \text{eV}$$

Answer: option 3.

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