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NEET PHYSICSEasy

The energy required to break one bond in DNA is 10−20 J10^{-20}\text{ J}. This value in eV is nearly:

A

0.60.6

B

0.060.06

C

0.0060.006

D

66

Step-by-Step Solution

To convert energy from Joules (J) to electron-volts (eV), we use the conversion factor: 1 eV=1.6×10−19 J1\text{ eV} = 1.6 \times 10^{-19}\text{ J} Given energy, E=10−20 JE = 10^{-20}\text{ J} E in eV=10−20 J1.6×10−19 J/eVE \text{ in eV} = \frac{10^{-20}\text{ J}}{1.6 \times 10^{-19}\text{ J/eV}} E in eV=10−11.6 eV=116 eVE \text{ in eV} = \frac{10^{-1}}{1.6}\text{ eV} = \frac{1}{16}\text{ eV} E in eV=0.0625 eVE \text{ in eV} = 0.0625\text{ eV} Rounding to the nearest value given in the options, we get 0.060.06.

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