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A Ray of Light is Incident Normally on a Plane Mirror. What Will Be The Angle of Incidence? - Science

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प्रश्न

A ray of light is incident normally on a plane mirror. What will be the 

angle of incidence?

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उत्तर

The angle of incidence is 0o because the incident ray is parallel to the normal.

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पाठ 4: Reflection of Light - Exercise 1 [पृष्ठ १७३]

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लखमीर सिंह Physics (Science) [English] Class 10
पाठ 4 Reflection of Light
Exercise 1 | Q 4.1 | पृष्ठ १७३

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संबंधित प्रश्‍न

A 4 cm tall object is placed on the principal axis of a convex lens. The distance of the object from the optical centre of the lens is 12 cm and its sharp image is formed at a distance of 24 cm from it on a screen on the other side of the lens. If the object is now moved a little away from the lens, in which way (towards the lens or away from the lens) will he have to move the screen to get a sharp image of the object on it again? How will the magnification of the image be affected?


An image that cannot be obtained on a screen is called ______.


Name the two types of spherical mirrors. What type of mirror is represented by the: 

front side of a shining steel spoon?


What is the relation between the focal length and radius of curvature of a spherical mirror (concave mirror of convex mirror)? Calculate the focal length of a spherical mirror whose radius of curvature is 25 cm.


Define (a) centre of curvature (b) radius of curvature (c) pole (d) principal axis, and (e) aperture, of a spherical mirror with the help of a labelled diagram


The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror: 

 What will be the focal length of this mirror?


Draw suitable diagrams to illustrate the action of (i) concave mirror and (ii) convex mirror on a beam of light incident parallel to the principal axis. 


Write the spherical mirror's formula and explain the meaning of each symbol used in it.


What is meant by magnification? Write its expression. What is its sign for the (a) real (b) virtual, image?


Why does a driver use a convex mirror instead of a plane mirror as a rear view mirror?
Illustrate your answer with the help of a ray diagram.


State two uses of a concave mirror. 


Define the following term:

convex mirror


What do you mean by the principal axis?

What do you mean by centre of curvature of a mirror?

Define the term Principle focus.


Draw a ray diagram to show that a convex mirror has a wider field of view.


The spherical mirror with a reflecting surface curved inward is called


Geometric centre of the spherical mirror is ______.


In torches, search lights and headlights of vehicles the bulb is placed ______.


The minimum length of the mirror required to see the full image of the person is half ‘ of his height.


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