Question

Calculate wave frequency of yellow colour radiation whose wavelength is 5800A.

Answer 1

Answer:

3x10 ^8 / 5800/ 10^ -6 = 3x10^8 x 10^-6

5.18x 10 ^ 14

Answer 2

The frequency of yellow colour radiation is $\bold{0.51 \times 10^{5} \ Hz}$.

Given:

Wavelength (λ) = 5800 Å = $\bold{5800 \times 10^{-10} \ m}$

To find:

Frequency (ν) =?

Formula:

Frequency (ν) = $\bold{\frac{Velocity \ of \ light}{Wavelength \ of \ yellow \ colour \ radiation}}$

Frequency (ν) = $\bold{\frac{c}{ \lambda}}$

Solution:

The velocity of light (constant) = c = $\bold{3 \times 10^{8} \ m/s}$

Frequency (ν) = $\frac{3 \times 10^{8}}{5800 \times 10^{-10}}$

Frequency (ν) = $\bold{0.51 \times 10^{5} \ Hz}$