Advertisements
Advertisements
Question
How is a spherical mirror used to diverge a beam of light from a point? Name the type of mirror used.
Advertisements
Solution
In the case of a convex mirror, the reflected rays diverge and do not meet at a point after reflection. They appear to come from a point’ F on the principal axis.
The type of mirror used is a CONVEX mirror.
APPEARS IN
RELATED QUESTIONS
A 50 cm tall object is at a very large distance from a diverging lens. A virtual, erect and diminished image of the object is formed at a distance of 20 cm in front of the lens. How much is the focal length of the lens?
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.
Define the following terms in the context of spherical mirrors :
(i) Pole
(ii) Centre of curvature
(iii) Radius of curvature
(iv) Principal axis
Write two more characteristics of the 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?
A concave mirror can be used to produce a parallel beam of light. Draw a ray to illustrate this.
For a spherical mirror, ______ is true.
What is “aperture”?
