Question

A photon has 8.0 × 10–15 J of energy. Planck’s constant is 6.63 × 10–34 J•s.

Answer 1

Answer:

8.3 × 10 ^ -20 Hz

$energy \: of \: a \: photon \: = \: \frac{h}{f} \\ f \: = \: \frac{h}{energy \: of \: a \: photon} \\ f \: = \: \frac{6.63 \times 10 ^{ - 34} }{8.0 { \times 10}^{ - 15} } \\ f \: = \: 8.29 \times 10 ^{ - 20}$

hopefully it makes sense :)