Question

How do you solve this ??

Answer 1

Answer : Option A) 2.00 eV

Explanation : The conversion of J to eV is done with the following formula;


`E_(eV) = E_(J) X (6.241 X 10^(18))`

Here, we have the value of particle in terms of Joules which is 3.2 X
`10^(-19)`

So, on substituting we get,

`E_(eV)` = 3.2 X
`10^(-19)` X
`(6.241 X 10^(18) )`



`E_(eV)` = 1.99 eV so, it can be rounded off to 2.00 eV.