MEDIUM
10th ICSE
IMPORTANT
Earn 100

A beam of light incident on a thin concave lens parallel to its principal axis diverges and appears to come from a point on the principal axis. Name the point. Draw a ray diagram to show it.

Important Questions on Refraction Through a Lens

EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 5 - Refraction Through a Lens>EXERCISE-5(A)>Q 21
Define the term focal length of a lens.
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 5 - Refraction Through a Lens>EXERCISE-5(A)>Q 22
What do you mean by the focal plane of a lens?
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 5 - Refraction Through a Lens>EXERCISE-5(A)>Q 23
State the condition for the following:

A lens has both its focal lengths equal.

EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 5 - Refraction Through a Lens>EXERCISE-5(A)>Q 23
State the condition for the following:

A ray passes undeviated through the lens.

MEDIUM
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 5 - Refraction Through a Lens>EXERCISE-5(A)>Q 24
A parallel oblique beam of light falls on a convex lens. Draw a diagram to show the refraction of light through the lens.
MEDIUM
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 5 - Refraction Through a Lens>EXERCISE-5(A)>Q 24
A parallel oblique beam of light falls on a concave lens. Draw a diagram to show the refraction of light through the lens.
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 5 - Refraction Through a Lens>EXERCISE-5(A)>Q 25

The diagram below shows a lens as a combination of a glass block and two prisms.

Question Image

Name the lens formed by the combination.

EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 5 - Refraction Through a Lens>EXERCISE-5(A)>Q 25

The diagram below shows a lens as a combination of a glass block and two prisms.

Question Image

What is the line XX' called?