Question

On the basis of the experiment, To trace the path of a ray of light through a rectangular glass slab", students of a class arrived at which one of the following conclusions?

Answer 1

Answer:

ray

Explanation:

ray of the light through tracing path

Answer 2

Complete question:

On the basis of their experiment, "To trace the path of a ray of light through a rectangular glass slab," students of a class arrived at which one of the following conclusions :

A. Angle of incidence is greater than the angle of emergence.

B. Angle of emergence is smaller than the angle of refraction.

C. Emergent ray is parallel to the refracted ray.

D. Incident ray and emergent ray are parallel to each other.

Rectangular glass slab experiment:

The conclusion is D. Incident ray and emergent ray are parallel to each other.

• Rectangular glass slab experiment is used to study about the refraction of light.
• Refraction takes place when the light passes from one medium to different medium.
• Note the diagram given below.
• i is the incident ray which is falls on the rectangular glass slab.
• When it passes on the denser medium, the light is refracted from it path.
• Here, it moves from lighter to denser medium. So, the ray is refracted towards the normal line (dotted line). If the ray passes from denser to lighter medium. Then the ray gets refracted away from the normal line.
• When the ray reaches the end of the glass, again the medium changes and the light is refracted. The light moves away from the normal line. It is denoted by e (emergent ray).
• The angle of the incident and emergent is equal. So, the incident and the emergent rays are parallel to each other.