Advertisements
Advertisements
Question
A ray of light incident at the optical centre of lens, passes undeviated after refraction.
Options
True
False
Advertisements
Solution
This statement is true.
APPEARS IN
RELATED QUESTIONS
What is a lens?
State the condition when a lens is called an equi-convex or equi-concave.
A ray of light after refraction through a lens emerges parallel to the principal axis of the lens. The incident ray either passes through ______.
Distinguish between a real and a virtual image.
Study the diagram shown in the following Figure.
Name the lens LL’ and draw its outline.

The diagram given below shows the position of an object OA in relation to a converging lens whose foci are at F1 and F2.

Describe how the distance of the image from the lens and the size of the image change as the object is moved towards F1.
State the condition of the following:
A lens has both its focal lengths equal.
In the following diagram the object and the image formed by the respective lenses are shown. Complete the ray diagram, and locate the focus. Find the focal length of the lens.

Define the term focus of a lens.
Complete the following diagram and state what happens to the ray of light after refraction through the lens.

