EASY
10th ICSE
IMPORTANT
Earn 100

Explain optical centre of a lens with the help of proper diagram(s).

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 12
State the condition when a lens is called an equi-convex or equi-concave.
MEDIUM
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 5 - Refraction Through a Lens>EXERCISE-5(A)>Q 13
Define the term principal foci of a convex lens and illustrate your answer with the aid of proper diagrams.
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.

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 26

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.