Advertisements
Advertisements
Question
To construct ray diagram we use two light rays which are so chosen that it is easy to know their directions after reflection from the mirror. List these two rays and state the path of these rays after reflection. Use these rays to locate the image of an object placed between centre of curvature and focus of a concave mirror.
Solution
Any two rays can be chosen to locate the image.
(a) A ray parallel to the principal axis after reflection will pass through the principal focus in case of a concave mirror and diverge from the principal axis in case of a convex mirror.
(b) A ray passing through the principal focus will emerge parallel to the principal axis after reflection.
Ray diagram of image formed when object is placed between the center of curvature and focus in a concave mirror
APPEARS IN
RELATED QUESTIONS
To determine the approximate value of the focal length of a given concave mirror, you focus the image of a distant object formed by the mirror on a screen. The image obtained on the serene, as compared to the object is always:
(a) Laterally inverted and diminished
(b) Inverted and diminished
(c) Erect and diminished
(d) Erect and highly diminished
List four characteristics of the images formed by plane mirrors.
For what position of an object, a real and diminished image is formed by a concave mirror?
Draw the following diagram in your answer book and show the formation of image with the help of suitable rays:
When an object is placed at a distance of 15 cm from a concave mirror, its image is formed at 10 cm in front of the mirror. Calculate the focal length of the mirror.
Radius of curvature of a spherical mirror is ............. its focal length.
Draw a ray diagram to show the formation of image of an object placed at the centre of curvature of a concave mirror. State the position, size and nature of the image.
Give any two applications of a concave and convex mirror.
You are provided with a concave mirror, a convex mirror, a concave lens and a convex lens. To obtain an enlarged image of an object you can use either
