In air a light source emits a wavelength of 630 nm.Under water the wavelength of this light will be
A)630 nm.
B)less than 630 nm.
C)more than 630 nm.
D)unpredictable.

Question

Quizplus · Accepted Answer

The wavelength of light is known to decrease when it transitions from air to a denser medium, such as water. This phenomenon is called refraction. Therefore, the wavelength of the light emitted by the source will be less than 630 nm when it is submerged in water.

In Air a Light Source Emits a Wavelength of 630