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प्रश्न
How many images will be formed when an object is placed between two parallel plane mirrors with their reflecting surfaces facing each other? Why do more distant images appear fainter?
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उत्तर
Angle between two mirrors facing each other = θ = 0°
No. of. images formed = n = `360^circ/theta = 360^circ/0 = ∞`
So, infinite number of images are formed when an object is placed between two parallel plane mirrors with their reflecting surfaces facing each other.
More distant images appear fainter when two plane mirror with their reflecting surfaces facing each other because,
After every successive reflection, some amount of light energy is absorbed. Thus luminosity of images goes on decreasing and hence they appear fainter.
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संबंधित प्रश्न
If the angle between the plane mirror and the incident ray is 40∘, what are the angles of incidence and reflection?
Explain the following term:
Reflected ray. Draw diagram/diagrams to show them.
Differentiate between the reflection of light from a plane mirror and that from a plane sheet of paper.
State two advantages and two disadvantages of the reflecting periscope.
Write down four characteristics of image formed in a plane mirror.
Give two uses of convex mirror.
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?
A boy is standing in front of a plane mirror at a distance of 3 m from it.
(i) What is the distance between the boy and his image?
(ii) If the boy moves 1 m backward, find the distance between the image and the boy.
