Question

Calculate frequency and wavelength of a light wave whose time period of oscillation is 2 * 10^-10 second ​

Answer 1

Frequency = Speed of light ( c ) / Wavelength ( lambda )

Frequency = 3 × 10^8 / 0.002 or 2 × 10^-3

Frequency of wave = 1.5 × 10^11 Hz