Advertisements
Advertisements
प्रश्न
How will you distinguish between a plane mirror, a concave mirror and a convex mirror, without touching them?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Define (a) centre of curvature (b) radius of curvature (c) pole (d) principal axis, and (e) aperture, of a spherical mirror with the help of a labelled diagram
State the number of images of an object placed between two mirrors, formed in each case when mirrors are inclined to each other at (a) 90°, and (b) 60°.
State the position of object for which the image formed by a concave mirror is of same size.
An object of length 4 cm is placed in front of a concave mirror at distance 30 cm. The focal length of mirror is 15 cm.
- Where will the image form?
- What will be the length of image?
What is the relationship between the focal length and radius of curvature?
The spherical mirror with a reflecting surface curved inward is called
Name the two types of spherical mirrors.
