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
A ray is incident on a plane mirror . Its reflected ray is perpandicular to the incident ray . Find the angle of incidence .
Draw diagrams to show the difference between regular and irregular reflection.
Why do automobile drivers prefer convex mirror as a rear vew mirror? Illustrate your answer.
Identify the following kind of beam of light.
The angle between an incident ray and the mirror is 350.
(i) What is the angle of incidence?
(ii) What is the angle of reflection?
(iii) What is the total angle turned by the ray of light?
(iv) What is the angle between the incident and the reflected rays?
Complete the ray diagram to show the image observed by the eye after reflection in the following figure.
Light that hits a mirror gets ______.
Why does a light ray incident on a rectangular glass slab immersed in any medium emerges parallel to itself? Explain using a diagram.
Total internal reflection will occur if the angle of reflection is ______.
