What happens when a narrow beam of (i) monochromatic light and (ii) white light passes through (a) glass slab and (b) glass prism
What happens when a narrow beam of (i) monochromatic light and (ii) white light passes through (a) glass slab and (b) glass prism
Glass slab:
It is a transparent glass plate in which both reflecting surfaces are rectangular in shape, and are parallel to each other. In the glass slab, the direction of the incident ray and the emergent ray of light are parallel to each other.
Glass prism:
It is made up of transparent glass plates which have two triangular sides, two inclined rectangular sides, and one rectangular base. In a glass prism, the direction of the incident ray and the emergent ray of light is not parallel to each other.
Monochromatic light:
Monochromatic light refers to the light of a single wavelength, that is, it has only one color.
Explanation:
When a narrow beam of monochromatic light passes through:
- Glass slab: It deviates from the actual path but the direction of the incident ray and emergent rays remain parallel to each other.
- Glass prism: It has deviated from the actual path but the direction of the incident ray and emergent ray of light are not parallel to each other.
When a narrow beam of white light passes through:
- Glass slab: There is no breaking of white light itself into the constituent color. Furthermore, the incident and emerging rays of light are parallel to each other.
- Glass prism: White light is divided into its seven vibrant colors, violet, indigo, blue, green, yellow, orange, and red (VIBGYOR), and the directions of the incident and emerging rays are not parallel to others.
Glass slab:
It is a transparent glass plate in which both reflecting surfaces are rectangular in shape, and are parallel to each other. In the glass slab, the direction of the incident ray and the emergent ray of light are parallel to each other.
Glass prism:
It is made up of transparent glass plates which have two triangular sides, two inclined rectangular sides, and one rectangular base. In a glass prism, the direction of the incident ray and the emergent ray of light is not parallel to each other.
Monochromatic light:
Monochromatic light refers to the light of a single wavelength, that is, it has only one color.
Explanation:
When a narrow beam of monochromatic light passes through:
- Glass slab: It deviates from the actual path but the direction of the incident ray and emergent rays remain parallel to each other.
- Glass prism: It has deviated from the actual path but the direction of the incident ray and emergent ray of light are not parallel to each other.
When a narrow beam of white light passes through:
- Glass slab: There is no breaking of white light itself into the constituent color. Furthermore, the incident and emerging rays of light are parallel to each other.
- Glass prism: White light is divided into its seven vibrant colors, violet, indigo, blue, green, yellow, orange, and red (VIBGYOR), and the directions of the incident and emerging rays are not parallel to others.
