Question

4. The wavelength of a violet light wave is measured as 435 nm.

a. What is this wave's frequency?

b. How much energy does this wave have?

Answer 1

Step-by-step explanation:

`wavelength= 435 * {10}^( - 9) m`

`a. \: frequency= (speed \: of \: violet \: light)/(wavelength)`

`f = \frac{3 * {10}^(8) }{435 * {10}^( - 9) }`

`f = 0.00689* {10}^( 17) hz`

`f = 6 .89 * {10}^(14) hz`

`b. \: Energy = h * f`

`= 6.626 * {10}^( - 34) * 6.89 * {10}^(14)`

`= 45.65 * {10}^( - 20) Joules`