Advertisements
Advertisements
प्रश्न
A ray of light strikes a plane mirror, such that the angle with the mirror is 20°. What is the value of angle of reflection? What is the angle between the incident ray and the reflected ray?
Advertisements
उत्तर
∵ Light ray makes an angle of 20° with the mirror
∴ ∠ABM = 20°
Angle of incidence = ∠i = 90° – 20°
∠i = 70°
∵ ∠i = r ∴ ∠r = 70°
Angle between incident ray and reflected ray = ∠i + ∠r = 70°+ 70°= 140°
APPEARS IN
संबंधित प्रश्न
A man standing in front of a plane mirror finds his image at a distance 6 metre from himself. What is the distance of man from the mirror?
Two plane mirrors are arranged parallel and facing each other at some separation. How many images are formed for a point object kept in between them? Show the formation of images with the help of a ray diagram
In the barber's shop, two plane mirrors are placed :
Explain the following term:
Normal Draw
diagram/diagrams to show them.
Prove experimentally that images are formed as far behind in a plane mirror as the object is in front of it.
Draw a neat two ray diagram for the formation of images in two plane mirrors, when mirrors are at right angles to each other.
What should be the minimum size of a plane mirror, so that a person 182 cm high can see himself completely?
Select the correct option:
If an incident ray passes through the centre of curvature of a spherical mirror, the reflected ray will:
