Advertisements
Advertisements
Question
A ray of light is incident normally on a plane mirror. What will be the
angle of reflection?
Advertisements
Solution
The angle of reflection is 0o in accordance with the first law of reflection, which states that the angle of incidence is equal to the angle of reflection.
APPEARS IN
RELATED QUESTIONS
One half of a convex lens of focal length 10 cm is covered with a black paper. Can such a lens produce an image of a complete object placed at a distance of 30 cm from the lens? Draw a ray diagram to justify your answer. A 4 cm tall object is placed perpendicular to its principal axis of a convex lens of focal length 20 cm. The distance of the object from the lens is 15 cm. Find the nature, position and the size of the image.
Explain the following term related to spherical lenses:- centres of curvature
Define Radius of curvature of the spherical mirror
What happens when a ray of light falls normally (or perpendiculary) on the surface of a plane mirror?
What kind of mirror is required for obtaining a virtual image of the same size as the object?
What is the relation between the focal length and radius of curvature of a spherical mirror (concave mirror of convex mirror)? Calculate the focal length of a spherical mirror whose radius of curvature is 25 cm.
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
When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper.
What is the nature of spherical mirror?
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
What will be the focal length of this mirror?
Define the following terms in the context of spherical mirrors :
(i) Pole
(ii) Centre of curvature
(iii) Radius of curvature
(iv) Principal axis
Explain the meaning of the terms focus and focal length in case of a convex mirror, with the help of suitable ray diagram.
The image formed by a convex mirror is
Answer the following question:
Distinguish between the convex mirror and the concave mirror.
Define linear magnification produced by a mirror?
Complete the following diagrams shown in the below figure by drawing the reflected ray for each incident ray.
The diagram below shows the parallel rays incident on a convex mirror. C is the centre of the curvature of the mirror. By drawing the paths of the reflected rays, label the focus F and hence find the focal length of the mirror.
In torches, search lights and headlights of vehicles the bulb is placed ______.
Size of image of an object by a mirror having a focal length of 20 cm is observed to be reduced to 1/3rd of its size. At what distance the object has been placed from the mirror? What is the nature of the image and the mirror?
The radius of curvature of a spherical mirror is 18 cm. What is the focal length of this mirror?
