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
An image which can be obtained on a screen is called a ______ image.
What is a virtual image?
Give one use each of a concave and a convex mirror.
Define Radius of curvature of the spherical mirror
What type of image is formed:
on a cinema screen?
State the types of mirrors used for (i) headlights and (ii) rear view mirror, in cars and motorcycles. Give to justify your answer in each case.
If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?
What is “aperture”?
