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प्रश्न
A ray of light is incident normally on a plane mirror. What will be the:
- angle of incidence?
- angle of reflection?
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उत्तर
- The angle of incidence is 0° because the incident ray is parallel to the normal.
- The angle of reflection is 0° in accordance with the first law of reflection, which states that the angle of incidence is equal to the angle of reflection.
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संबंधित प्रश्न
Explain the following term related to spherical lenses:- principal axis
Explain the following term related to spherical lenses:- principal focus
A concave mirror always forms a real image.
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. |
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