Which of the following is equivalent to the energy of 1.602 × 10−20 J?
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A.
602 × 10−20 J? Ans 1. 1 eV
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B.
0.5 eV
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C.
0.1 eV
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D.
10 eV
Correct Answer:
C. 0.1 eV
Explanation:
To determine which energy level is equivalent to 1.602 × 10−20 J, we use the conversion factor between Joules and electronvolts (eV). One electronvolt is defined as the amount of kinetic energy gained by a single electron accelerating from rest through an electric potential difference of one volt, which is approximately 1.602 × 10−19 J. By dividing the given value (1.602 × 10−20 J) by the value of 1 eV (1.602 × 10−19 J), we get 0.1. Therefore, 1.602 × 10−20 J is equivalent to 0.1 eV.
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