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Units and Measurement question

2020 · Q154
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Units and Measurement question

2020 · Q154

NEETPhysicsUnits and MeasurementMCQ+4 / −1
The energy required to break one bond in DNA is 10-20 J. This value in eV is nearly :
  1. A
    0.6
  2. B
    0.06
  3. C
    0.006
  4. D
    6
View written solutionFree

Correct answer: B

1eV=1.6×10−19J1eV = 1.6 \times {10^{ - 19}}J1eV=1.6×10−19J

1J=11.6×10−19eV1J = {1 \over {1.6 \times {{10}^{ - 19}}}}eV1J=1.6×10−191​eV

10−20J=10−201.6×10−19eV{10^{ - 20}}J = {{{{10}^{ - 20}}} \over {1.6 \times {{10}^{ - 19}}}}eV10−20J=1.6×10−1910−20​eV

= 0.06 eV

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