Question

Calculate the wavelength frequency and wavenumber of light wave whose period is 2.0 into 10 ^ - 10

Answer 1

the answer for the question is in the above picture

Answer 2

16.66 Meters

Explanation:

Frequency of light wave(v) = $\frac{1}{Period} \frac{1}{Period}$

= 1 / 2.0 x 10^-10

= 5.0 * 10^9 s^-1

Wavelength of the light wave(λ) = cv

Where:

c denotes the speed of light 3 * 10^8 m/sec

Substituting the value of ‘c’ in the previous expression for λ:

λ = 3 * 10^ / 5.0 * 10^9 = 6.0 * 10^-2 m

Wave number (v) of light:

= 1 / λ = 1 / 6.0 * 10^-2

= 1.66 * 10^1 m^-1

= 16.66 meter