Question

A ray of white light passes from medium 1 to medium 2.
Which of the following quantities of the refracted ray will differ from that of the incident ray?

• A. Speed
• B. Intensity
• C. Frequency
• D. Wavelength

Answer 1

Answer: (A), (B), (D)

The correct options are
A Speed
B Intensity
D Wavelength

When a ray of light travels from one medium to another medium, due to a change in density of medium its speed and intensity changes.
When light goes to denser medium, speed decreases and when light goes to rarer medium, speed increases.
During refraction of light, frequency does not change because it depends on the source.
We know that,
$v=f\times \lambda$
where, $v$ is the speed of light, $f$ is the frequency of light and $\lambda$ is the wavelength of light.
As frequency is constant, if $v$ varies, $\lambda$ will also vary.