Question

What is the frequency of a photon with an energy of 3.26 x 10-19 J?

A. 2.03 x 1014 Hz
B. 4.92 x 1014 Hz
c. 6.10 * 1014 Hz
ОС
D. 5.69 x 1014 Hz

Answer 1

B.

`from \: eisteins \: energy \: relation : \\ E = hf \\ h \: is \: plancks \: constant\\ 3.26 * {10}^( - 19) = 6.63 * {10}^( - 34 ) * f \\ f = \frac{3.26 * {10}^( - 19) }{6.63 * {10}^( - 34) } \\ f = 4.92 * {10}^(14) \: Hz`