Step 1
(A)
We know speed of light is given by the formula-
Speed = wavelength x frequency
Now for the violet light speed of light is 3 x 10^8 m/sec.
We proceed now as follows-
Step 2
(B)
We know 1 nm = 10^-9 m
Now,frequency will be-
3 x 10^8 m /sec / 433 x 10^-9 m = 0.00692 x 1017 sec-1
Thus, the frequency of the violet light of given wavelength is
0.00692 x 1017 sec-1 .
