Soldiers use the periscope while sitting in a bunker. Why?
Important Questions on Light
Determine the number of images formed when an object is placed between two parallel plane mirrors facing each other.
Draw a ray diagram of formation of images when two mirrors are placed at an angle of 90° to each other.
Mention the name of a phenomenon which takes places when patterns are formed in a kaleidoscope.
Explain, what happens when a beam of sunlight is passed through a glass prism.
Mention the type of lens is present in the human eye.
(Concave/Convex/Bifocal)
Name the point inside the human eye where the image is not visible.
Name the phenomenon which enables us to see movies in a cinema hall.
(Choose from: Dispersion of vision/ Persistence of vision/ Refraction of vision)
Explain what happens to the size of the pupil of our eye in bright.
