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प्रश्न
Define the term Principle axis.
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उत्तर
The principal axis is the straight line passing through the pole and the centre of curvature.
संबंधित प्रश्न
With the help of diagrams, explain the difference between the regular and irregular reflection.
A light ray is incident normally on a plane mirror. What is the direction of reflected ray? Show it on a diagram.
The diagram below in figure shows an object XY in front of a plane mirror MM1 . Draw on the diagram, path of two rays from each point X and Y of the object to show the formation of its image .
Describe the principle of simple periscope through an outline ray diagram. Give one of its uses.
State whether the following statement is true or false. If false, correct it.
The angle of incidence is the angle made by the incident ray with the plane mirror.
State whether the following statement is true or false. If false, correct it.
If the incident ray makes an angle of Xo with the normal, then the reflected ray is 2Xo.
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?
Materials which reflect the light well are called ______.
Figure shows a ray of light as it travels from medium A to medium B. Refractive index of the medium B relative to medium A is
