Ray parallel to principal axis passes through the focus,The angle of incident Ray at the pole is equal to angle of reflection .Use rules to draw virtual and magnified image of an object in spherical mirror
Answers
Explanation:
Image Formation by Spherical Mirrors
Have you ever gone camping in the night or have walked inside a cave? Whenever its dark, you must have used a torch to show you the right path. Why not a candle instead? Well, torches have special spherical mirrors which make the light focused in the direction you want to go. Let’s find out the mechanism involved in the image formation by spherical mirrors…
Rays incident on a spherical mirror exhibits the following behaviour:
Light ray passing through (or directed towards) the center of curvature retraces its path after reflection.
Light ray parallel to the principal axis passes through (or appears to diverge from) focus after reflection.
Light ray passing through (or directed towards) focus is reflected as a ray parallel to the principal axis.
Light ray incident on the pole of the mirror is reflected at an angle of reflection (with principal axis) equal to the angle of incidence (with principal axis).the diagram, the ray of light approaching the mirror is known as the incident ray. The ray of light that leaves the mirror is known as the reflected ray. At the point of incidence where the ray strikes the mirror, a line can be drawn perpendicular to the surface of the mirror. This line is known as a normal line.
The normal line divides the angle between the incident ray and the reflected ray into two equal angles. The angle between the incident ray and the normal is known as the angle of incidence. The angle between the reflected ray and the normal is known as the angle of reflection. The laws of reflection are as follows:
The incident ray, the reflected ray and the normal to the reflection surface at the point of the incidence lie in the same plane.
The angle which the incident ray makes with the normal is equal to the angle which the reflected ray makes to the same normal.
The reflected ray and the incident ray are on the opposite sides of the normal.
IMAGE FORMATION FROM SPHERICAL REFLECTING SURFACES - DEFINITION
concept
The curved shining surface of a spoon acts as a mirror. The inner surface of a spoon acts like a concave mirror, while its outer surface acts like a convex mirror.Hence the inner surface of spoon shows inverted image and outer shows erect.