Name: Lateral Shift Due to a Glass Slab
Uploaded: 2019-07-19
Duration: 2 min 19 s
Description: When a light ray travels through a slab, it experiences a shift. What do we call this shift? Watch this educative video and learn about this phenomenon.

Question

State the rules for drawing ray diagrams for spherical mirrors. Support them with ray diagrams.

Accepted Answer

We know that countless rays start from a given point of an object, but it is possible to locate the position of an image, formed in a spherical mirror, by taking standard rays.

An incident ray passing through the centre of curvature of a concave mirror reflects back along the same path, without any deviation. In case of a convex mirror, an incident ray that appears to move towards the centre of curvature is reflected back along the same path without any deviation.

In case of a concave mirror, an incident ray parallel to the principal axis passes through its focus after reflection. In case of a convex mirror, the incident ray after reflection appears to come from the focus of the mirror.

In a concave mirror, an incident ray passing through the focus is reflected parallel to the principal axis. In case of a convex mirror, the incident ray, which appears to move in the direction of the focus of the mirror, is reflected parallel to the principal axis.

In a concave mirror, a ray of light incident at the pole gets reflected along a path such that the angle of incidence is equal to the angle of reflection. This is also true for a convex mirror.

State the rules for drawing ray diagrams for spherical mirrors. Support them with ray diagrams.

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