Question

whats the answer of this plz help​

Answer 1

(b) is the correct option, frequency of this light is 5*10¹⁴s-1

Answer 2

Answer:

E=12400/lambda

E=hv

v=E/h

v=12400/6.6×10^-34lambda

v=1.878×10^-31/600×10^-9

v=0.00313×10^-22

v=3.13×10^-19