Question

Objects get their colors from reflecting only certain wavelengths when hit with white light. Light reflected from a green leaf is found to have a wavelength of 4.90×10^-7. What is the frequency of the light?​

Answer 1

Answer:

frequency = 6.12× 10¹⁴ s⁻¹

Explanation:

Given data:

Wavelength = 4.90 ×10⁻⁷ m

Frequency = ?

Solution:

Formula:

Speed of wave = frequency × wavelength

Speed of wave = 3 × 10⁸ m/s

Speed of wave = frequency × wavelength

frequency = Speed of wave/wavelength

frequency = 3 × 10⁸ m/s / 4.90 ×10⁻⁷ m

frequency = 0.612 × 10¹⁵ s⁻¹

frequency = 6.12× 10¹⁴ s⁻¹