What do you mean by principle axis?

What do you mean by the principal axis?

One Line Answer

The principal axis is the straight line passing through the pole and the centre of curvature.

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Chapter 6: Light - Exercise [Page 261]

Chapter 6 Light
Exercise | Q 11 | Page 261

An image formed by a ______ mirror is always of the same size as that of the object.

What happens when a ray of light falls normally (or perpendiculary) on the surface of a plane mirror?

A lens forms a real image 3 cm high of an object 1 cm high. If the separation of object and image is 15 cm, find the focal length of the lens.

The letters on the front of an ambulance are written laterally inverted like . Give reason.

Complete the following diagrams shown in Fig. by drawing the reflected ray for each of the incident ray A and B.

Name the mirror which always produces an erect and virtual image. How is the size of image related to the size of object?

Select the correct option:

Which mirror is used in periscope?

Geometric centre of the spherical mirror is ______.

What is the difference between virtual images of an object formed by a concave mirror and a convex mirror?

A spherical mirror whose reflecting surface is curved outwards is called ______ mirror.