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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.
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संबंधित प्रश्न
Fill in the blank
We are able to see the objects around us due to _________, reflection.
What is meant by lateral inversion of an image in a plane mirror ? Explain it with the help of a diagram.
Draw a neat two ray diagram to illustrate how a concave mirror is used as a shaving mirror.
When a ray of light strikes a plane mirror at an angle of 150 with the mirror, what will be the angle through which the ray will deviate? Illustrate with a ray diagram in the following figure.
Complete the ray diagram to show the image observed by the eye after reflection in the following figure.
State whether true or false. If false, correct the statement.
The reason for brilliance of diamonds is total internal reflection of light.
An object that blocks all of the light from passing through is ______.
Match the following:
| 1. | Rubber | a. | Erect |
| 2. | Greased paper | b. | Inverted |
| 3. | Real image | c. | Opaque medium |
| 4. | Virtual image | d. | Translucent medium |
