Advertisements
Advertisements
प्रश्न
Give two uses of concave mirror.
Advertisements
उत्तर
Two uses of concave mirror are:
(a) Concave mirror is used as A Reflector in head lights of cars and in search light. The source of light (bulb) is placed at the principal focus and the reflector forms parallel beam of light.
(b) For doctors to examine throat, ear, nose, and eyes, light is focused on the help of a concave mirror.
APPEARS IN
संबंधित प्रश्न
Write true or false of the following statement.
The image of the right hand in a plane mirror looks like that of a left hand.
What do you understand by the Light?
Describe the principle of simple periscope through an outline ray diagram. Give one of its uses.
An object OA is placed on the principal axis of a concave mirror as shown in the figure. Copy and complete the diagram to show the formation of image.

Out of the following, choose the substance which is translucent medium:
The reflection of a ray of light (OA) normally incident on a plane mirror is shown below

What are the angles of incidence and reflection?
Complete the ray diagram to show the image observed by the eye after reflection in the following figure.

In a completely dark room, if you hold up a mirror in front of you, will you see a reflection of yourself in the mirror?
A beam of light is incident through the holes on side A and emerges out of the holes on the other face of the box as shown in the Figure. Which of the following could be inside the box?

