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प्रश्न
How will you distinguish between a plane mirror, a concave mirror and a convex mirror, without touching them?
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उत्तर
To distinguish between a plane mirror, concave mirror and convex mirror, the given mirror is held near the face and image is seen. There can be following three cases:
Case (i): If the image is upright, of same size and it does not change in size by moving the mirror towards or away from the face, the mirror is plane.
(ii) If the image is upright and magnified, and increases in size on moving the mirror away, the mirror is concave.
(iii) If the image is upright and diminished and decreases in size on moving the mirror away, the mirror is convex.
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संबंधित प्रश्न
Image formed by a convex ______ is always virtual and smaller in size.
Figure shows a concave mirror with its pole at P, focus F and centre of curvature C. Draw ray diagram to show the formation of image of an object OA.
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spherical mirror
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A concave mirror can be used to produce a parallel beam of light. Draw a ray to illustrate this.
The spherical mirror with a reflecting surface curved inward is called
The distance from the pole to the focus is called ______.
The distance from the center of curvature of the mirror to the pole is called the focal length of the mirror.
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