Advertisements
Advertisements
प्रश्न
A concave mirror always forms a real image.
पर्याय
True
False
उत्तर
This statement is False.
Explanation:
A concave mirror can form both real and virtual images. The nature of the image depends on the distance of the object from the mirror.
APPEARS IN
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. |
Explain the following terms :
Pole, Centre of curvature, Radius of curvature, Principal axis. Show them on separate diagrams for each of the concave and convex mirrors.
Explain the following term:
Incident ray
Draw diagram/diagrams to show them.
When an object of height 1 cm is kept at a distance 4 cm from a concave mirror, its erect image of height 1.5 cm is formed at a distance 6 cm behind the mirror. Find the focal length of mirror, by drawing.
The distance from the pole to the focus is called ______.
Numerical problem.
The radius of curvature of a spherical mirror is 25 cm. Find its focal length.
Assertion: Incident ray is directed towards the centre of curvature of spherical mirror. After reflection it retraces its path.
Reason: Angle of incidence (i) = Angle of reflection (r) = 0°
Name the type of mirror used in the following situation:
Solar furnace
Support your answer with reason.
Name the two types of spherical mirrors.
