Question

If you answer I mark as brainliest

Answer 1

frequency= c/wave length
which is equal to the following equation.


$\frac{3 \times { 10 }^{8} }{200}$
so the answer is 15*10^5

Answer 2

Answer:

frequency =c/legnth of wave

it is equal to:

$\frac{3 \times {10}^{8} }{200}$

answer =15*10^5