Describe the function of iris.

Important Questions on The Human Eye and the Colourful World

MEDIUM

10th CBSE

IMPORTANT

Modern's ABC+ Of Science Physics>Chapter 5 - The Human Eye and the Colourful World>Practice Exercise 5A>Q 1

Describe the function of power of accommodation.

MEDIUM

10th CBSE

IMPORTANT

Modern's ABC+ Of Science Physics>Chapter 5 - The Human Eye and the Colourful World>Practice Exercise 5A>Q 2

What is myopia? What are the probable causes of myopia? How can it be corrected? Show with the help of ray diagrams.

MEDIUM

10th CBSE

IMPORTANT

Modern's ABC+ Of Science Physics>Chapter 5 - The Human Eye and the Colourful World>Practice Exercise 5A>Q 3

What is hypermetropia? What are the probable causes of hypermetropia? How can it be corrected? Show with the help of ray diagrams.

MEDIUM

10th CBSE

IMPORTANT

Modern's ABC+ Of Science Physics>Chapter 5 - The Human Eye and the Colourful World>Practice Exercise 5A>Q 4

The far point of a person suffering from myopia is $4 \mathrm{m}$ from the eyes. Find the power of the corrective lens (in $\mathrm{D}$) he will have to use in order to see distant objects.

MEDIUM

10th CBSE

IMPORTANT

Modern's ABC+ Of Science Physics>Chapter 5 - The Human Eye and the Colourful World>Practice Exercise 5A>Q 5

An old person has near point $100 \mathrm{cm}$. Find the power of the corrective lens (in $\mathrm{D}$) he will have to use.

MEDIUM

10th CBSE

IMPORTANT

Modern's ABC+ Of Science Physics>Chapter 5 - The Human Eye and the Colourful World>Practice Exercise 5A>Q 6

The near point of a defective eye is $75 \mathrm{cm}$ from the eye. What is the power of the corrective lens (in $\mathrm{D}$) which enables him to read a book kept at the least distance of distinct vision?

EASY

10th CBSE

IMPORTANT

Modern's ABC+ Of Science Physics>Chapter 5 - The Human Eye and the Colourful World>Practice Exercise 5A>Q 7

Write the function of the following part of the human eye:
Cornea

EASY

10th CBSE

IMPORTANT

Modern's ABC+ Of Science Physics>Chapter 5 - The Human Eye and the Colourful World>Practice Exercise 5A>Q 7

Write the function of the following part of the human eye:
Iris