Question

21 A student draws a diagram representing three rays of light from point P passing through a
converging lens. Each point labelled F is a principal focus of the lens.
lens
ray X
ray Y
ray Z
Which of the rays has the student drawn correctly?
A
B
C
ray X and ray Y
ray X and ray Z
ray Y only
ray Z only
D​

Answer 1

Answer:

options D is correct yup

Answer 2

Answer:

Ray X and Ray Z are the rays student drawn

Explanation:

• The principal focus is the location where, after passing through the lens, a beam that is parallel to the principal axis seems to diverge and then converges from a point on the principal axis.
• The primary focus of a convex lens is a point on the principal axis where, as depicted in the image, light rays appear to be colliding after refraction by the lens.

A student draws a diagram representing three rays of light from point P passing through a converging lens. Each point labelled F is a principal focus of the lens.

A diagram is given below:

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