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प्रश्न
Define the following terms in the context of a diverging mirror:
- Principal focus
- Focal length
Draw a labelled ray diagram to illustrate your answer.
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उत्तर
- Principal focus: The principal focus of the diverging mirror is the point on the principal axis from which all incident rays appear to diverge from behind the mirror.
- Focal length: The distance between the pole and the principal focus of a spherical mirror is called the focal length.
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संबंधित प्रश्न
Match the items given in Column I with one or more items of Column II.
| Column I | Column II | ||
| (a) | A plane mirror | (i) | Used as a magnifying glass. |
| (b) | A convex mirror | (ii) | Can form image of objects spread over a large area. |
| (c) | A convex lens | (iii) | Used by dentists to see enlarged image of teeth. |
| (d) | A concave mirror | (iv) | The image is always inverted and magnified. |
| (e) | A concave lens | (v) | The image is erect and of the same size as the object. |
| (vi) | The image is erect and smaller in size than the object. |
Name the two types of spherical mirrors. What type of mirror is represented by the:
back side of a shining steel spoon?
What is a spherical mirror?
Define the terms focus and focal length of a concave mirror. Draw diagram to illustrate your answer.
Complete the following diagrams shown in Fig. by drawing the reflected ray for each of the incident ray A and B.
Select the correct option:
Looking into a mirror one finds her image diminished, the mirror is:
A ray of light is incident towards a plane mirror at an angle of 30° with the mirror surface. What will be the angle of reflection?
The image formed in a plane mirror is always inverted.
