Question

7. Convert 4.8 x 10-20 eV into joules.
Ans. 7.68 x 10-39​

Answer 1

Answer:

4.8 x 10^-20 eV = 7.68 x 10^-39​

Explanation:

Given,

4.8 x 10-20 eV.

We have to convert into joules.

1 eV is defined as energy required to move an electron accelerating through a potential difference of 1 Volt.

and, 1 eV = 1.602 * 10^-19 J

so, 4.8 x 10^-20 eV = 4.8 x 10^-20 * 1.602 * 10^-19 J

i.e 4.8 x 10^-20 eV = 7.68 x 10^-39​