Question

Which of the following phenomena can not be explained by Huygens wave theory?

• A. Interference of light
• B. Refraction of light
• C. Double refraction
• D. Reflection of light

Answer 1

The correct option is C

Double refraction

Explanation for correct option:

In the case of option C,

1. Huygens's waves theory could not illustrate double refraction because the light is perceived as a mechanical wave in Huygens's theory, which can not explain double refraction.
2. When an unpolarized light beam strikes certain materials, such as Quartz or Calcite crystal, it splits into two refracted beams. This is referred to as double refraction.

Explanation for incorrect option:

In case of option A,

1. Interference is a phenomenon in which two waves of the same frequency superpose to produce a resultant intensity that differs from the sum of their individual intensities.
2. Since Huygens waves theory works on the wave nature of light and interference of light is based on wave nature of light so this can be easily explained by this theory.
3. Thus, option A is incorrect.

In case of option B,

1. When a light ray passes from one medium to another, it deviates from its intended path. This phenomenon is referred to as the refraction of light.
2. Huygens waves theory could explain the wave nature of light and refraction of light is based on the wave nature of light. So this phenomenon can easily be explained by Huygens waves theory.
3. Thus, option B is incorrect.

In case of option D,

1. When rays of light strike a surface, their direction changes, and they return back in the same medium. This is known as the reflection of light.
2. Reflection of light is also based on the wave theory of light so it can easily be explained by Huygens wave theory.
3. Thus, option D is incorrect.

Therefore, option C is the correct answer.