If the wavelength of light is 400 nm in a substance where the speed of light is 2.35 × 10⁸ m/s, what is the wavelength of this light in air? A) 313 nm B) 400 nm C) 511 nm D) 635 nm E) 940 nm

Question

Quizplus · Accepted Answer

The wavelength of light in air can be found using the formula: wavelength in air = (wavelength in substance) × (speed of light in air / speed of light in substance). The speed of light in air is approximately 3.00 × 10^8 m/s. Thus, the wavelength in air = 400 nm × (3.00 × 10^8 m/s / 2.35 × 10^8 m/s) = 511 nm.

If the Wavelength of Light Is 400 Nm in a Substance