The diagram shows the basic parts of human eye.
Which part protects the human eye from injury?
Important Questions on Light
The picture shows the size of the pupil under two different conditions.
What makes the pupil change size between condictions 1 and 2?
Surfaces on which the angle of incidence is equal to the angle of reflection is/are:
A small hole P is made in a piece of cardboard. The hole is illuminated by a torch as shown in the figure below. The ray of light coming out of the hole falls on a mirror.
At which point should the eye be placed so that the hole can be seen?
A ray of light incident on mirror A at an angle of falls on mirror B after reflection. The angle of reflection for the ray reflected from mirror B would be
A tiny mirror M is fixed on a piece of cardboard placed on a table. The cardboard is illuminated by light from a bulb. The position of eye with respect to position of bulb is shown in figure as A, B, C and D. In which position mirror will be visible?
Boojho planned an activity to observe an object A through pipes as shown in figure, so that he could see objects which he could not directly see.
What must be the angle with respect to the incident light at which he should place the mirrors?
