Advertisements
Advertisements
प्रश्न
How is a spherical mirror used to converge a beam of light at a point? Name the type of mirror used.
Advertisements
उत्तर
If a parallel beam of light is incident on a concave mirror, it converges the beam to a point called focus
Type of mirror used is CONCAVE.
APPEARS IN
संबंधित प्रश्न
Explain the following term related to spherical lenses:- principal focus
We can obtain an enlarged and erect image by a convex mirror.
A diverging lens is used in:
(a) a magnifying glass
(b) a car to see objects on rear side
(c) spectacles for the correction of short sight
(d) a simple camera
How is a spherical mirror used to diverge a beam of light from a point? Name the type of mirror used.
Draw suitable diagrams to illustrate the action of (i) concave mirror and (ii) convex mirror on a beam of light incident parallel to the principal axis.
The radius of curvature of a convex mirror is 40 cm. Find its focal length.
A concave mirror forms a real image of an object placed in front of it at a distance 30 cm, of size three times the size of object. Find
- the focal length of mirror
- position of image.
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?
Complete the following diagrams shown in the following figures by drawing the reflected rays.
The radius of curvature of a spherical mirror is 18 cm. What is the focal length of this mirror?
