Advertisements
Advertisements
Question
Give two uses of concave mirror.
Advertisements
Solution
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
RELATED QUESTIONS
Fill in the blank
A plane mirror _________ reflects 100 percent light falling on it.
What is meant by lateral inversion of an image in a plane mirror ? Explain it with the help of a diagram.
Figure shows an incident ray AO and the normal ON on a plane mirror. The angle which the incident ray AO makes with mirror is 30°. (a) Find the angle of incidence. (b) Draw the reflected ray and then find the angle between the incident and reflected rays.
State whether the following statement is true or false. If false, correct it.
If a ray of light incident on a plane mirror is such that it makes an angle of 30o with the mirror, then the angle of reflection is 60o.
An object is placed in front of a convex mirror of focal length 25 cm. By scale, a drawing shows the formation of image and states the nature of image.
Given that v = 10 cm.
Find the odd one.
sun, candle, torch, pen
Say TRUE or FALSE
We see a book because it reflects the light that falls on its surface
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?
Which position of the object will produce a magnified virtual image, if a concave mirror of focal length 15 cm is being used?
Play with a mirror
Write your name with a sketch pen on a thin sheet of paper, polythene or glass. Read your name on the sheet while standing in front of a plane mirror. Now look at your image in the mirror.
