Advertisements
Advertisements
Question
The following diagram shows an incident ray AO and the normal ON on a plane mirror. Find the angle of incidence and angle of reflection.
Advertisements
Solution
ON is perpendicular on a plane mirror
Angle of incidence ∠i (∠AON) i.e.
Angle between incident ray and normal ray = 90° – 30° = 60°
Angle of Reflection = 60°
∴ ∠i = ∠r
∴ Angle between incident and reflected ray i.e. ∠AOB
= 60 + 60 = 120°
APPEARS IN
RELATED QUESTIONS
Write true or false of the following statement.
The image formed by a plane mirror is upright.
Write true or false of the following statement.
The objects are seen around us due to irregular reflection of light.
Fill in the blank
The incident ray, the reflected ray and the normal lie in one _______
Select the correct alternative
The angle of incidence on a plane mirror is 30°.The angle of reflection will be:
Select the correct alternative
The angle of incidence on a plane mirror is 30°. The angle between the incident ray and the reflected ray is
Explain the following terms:
Incident ray, Reflected ray, Angle of incidence, Angle of reflection, Normal.
Light is falling on surfaces S1 S2 and S3 as shown in the following figure.
|
|
|
|
|
|
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 following figure. The pencil 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?
How many times is a ray of light reflected by two plane mirrors placed parallel and facing each other?
A ray of light fall on a plane surface at an angle of incidence of 9° and reflection occurs. Calculate the angle of reflection in degree.
