Answer the following questions
In the case of refraction og light through a glass slab, the emergent ray is parallel to the incident ray , but it is displaced sideways. Why does this happen?

Answer the following questions Draw a neat and labelled diagram to show refraction of light through a glass slab.

'During refraction of light through the glass slab, incident ray and emergent ray are parallel to each other.' Explain.

Answer the following questions : In the case of a convex lens , show the path of the refracted ray when the incident ray of light is parallel to the principal axis of the lens passes through the focus of the lens passes through the optical centre of the lens.

Answer the following question form the diagram: Which two rays are parallel?

Answer the following questions: In the case of a concave mirror, show the path of the reflected ray when the Incident ray of light Is parallel to the principal axis of the mirror.

Answer the following questions Repeat the activity " Refraction of light passing through a glass slab" by replacing the glass slab by a transparent plastic slab. What difference do you notice?

Answer the following questions : In general, when a ray of light passes through a lens , there occurs a change in its direction of propagation . Why?

Answer the following questions How does the dispersion of white light take place when it passes through a glass prism ?

During refraction of light through the glass slab, incident ray and emergent ray are perpendicular to each other. True/false

Answer the following questions: In the case of a concave mirror, show the path of the reflected ray when the Incident ray of light passes through the focus of the mirror