Question

Indentify the correct statement from the following

• A. Wave nature of light was proposed by Huygen.
• B. The direction of light ray and its wave front are opposite.
• C. Huygen's wave theory could not explain phenomenon of reflection.
• D. A monochromatic ray of light after passing through the prism should be made of one colour only.

Answer 1

Answer: (A), (D)

Wave nature of light was proposed by Huygen.
A monochromatic ray of light after passing through the prism should be made of one colour only.

Huygen's wave theory: This wave theory was given by Huygens in 1678. According to this theory, a source of light propagates spherical waves in hypothetical.

In optics a ray is an idealized model of light, obtained by choosing a line that is perpendicular to the wavefronts of the actual light, and that points in the direction of energy flow.

Huygen’s wave theory could easily explain reflection, energy transmission, and refraction, but had difficulty explaining the straight line travel of light.

When a ray of monochromatic light would pass through a prism, you would see it refract but it will not disperse as its a beam of single wavelength. When light enters a medium with a different density it bends (refracts). Because white light contains a collection of component colors with varying wavelengths.