Question

Work function of a metal is 2.51 ev. it's threshold frequency is

Answer 1

hi ✌️

1ev=
$1.6 \times {10}^{ - 19} j$
we know that,e=h/frequency

frequency=
$1.6 \times {10}^{ - 19} \times 2.51 \div 6.626 \times {10}^{ - 34} \\ = 0.6060 \times {10}^{15} \\ = 6.060 \times {10}^{14}$
hope it will help you ☺️

Answer 2

hope it will help u please mark as brain list answer...!!!*****