Draw two diagrams to explain refraction and dispersion.

Important Questions on The Human Eye and The Colourful World

MEDIUM

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 2 - Part -1>The Human Eye and The Colourful World>Q 11

Answer the following questions: (a) What do you understand by the term ‘presbyopia’? (b) Mention any two causes of this defect. (c) How is it corrected?

MEDIUM

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 2 - Part -1>The Human Eye and The Colourful World>Q 12

An eye has a far point of $2 \mathrm{m}$.
(a) What type of lens would he require to increase the far point to infinity? (b) Calculate the power of lens. (c) What is the defect?

MEDIUM

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 2 - Part -1>The Human Eye and The Colourful World>Q 13

Explain how a normal eye can see objects lying at various distances clearly.

MEDIUM

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 2 - Part -1>The Human Eye and The Colourful World>Q 14

How the amount of light entering the eye is controlled?

MEDIUM

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 2 - Part -1>The Human Eye and The Colourful World>Q 15

Describe the working of the human eye.

EASY

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 2 - Part -1>The Human Eye and The Colourful World>Q 16

(a) What are light-sensitive cells? (b) Where are they found? (c) Give the functions of each.

EASY

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 2 - Part -1>The Human Eye and The Colourful World>Q 17

Why is it impossible to make out the colour of cars on the road at night?

MEDIUM

10th CBSE

IMPORTANT

Concise Physics A Textbook of Science for Class X>Chapter 2 - Part -1>The Human Eye and The Colourful World>Q 18

Differentiate between myopia and hypermetropia.