Why does sun appear flattened at sunrise and sunset?

Important Questions on The Human Eye and The Colourful World

EASY

10th CBSE

IMPORTANT

SCIENCE PHYSICS>Chapter 2 - The Human Eye and The Colourful World>MOCK TEST QUESTION PAPER>Q 15

What is meant by spectrum? Name all colours of a rainbow.

MEDIUM

10th CBSE

IMPORTANT

SCIENCE PHYSICS>Chapter 2 - The Human Eye and The Colourful World>MOCK TEST QUESTION PAPER>Q 16

Define Tyndall effect. Describe an activity to demonstrate it.

EASY

10th CBSE

IMPORTANT

SCIENCE PHYSICS>Chapter 2 - The Human Eye and The Colourful World>MOCK TEST QUESTION PAPER>Q 17

State the role of ciliary muscles in eye.

HARD

10th CBSE

IMPORTANT

SCIENCE PHYSICS>Chapter 2 - The Human Eye and The Colourful World>MOCK TEST QUESTION PAPER>Q 18

Why are we not able to see clearly when we enter a room after being in bright sunlight for long? How is normal vision restored?

MEDIUM

10th CBSE

IMPORTANT

SCIENCE PHYSICS>Chapter 2 - The Human Eye and The Colourful World>MOCK TEST QUESTION PAPER>Q 19

Explain the formation of rainbow in the sky. Draw diagram also.

EASY

10th CBSE

IMPORTANT

SCIENCE PHYSICS>Chapter 2 - The Human Eye and The Colourful World>MOCK TEST QUESTION PAPER>Q 20

Explain why stars twinkle while planets do not.

MEDIUM

10th CBSE

IMPORTANT

SCIENCE PHYSICS>Chapter 2 - The Human Eye and The Colourful World>MOCK TEST QUESTION PAPER>Q 21

Discuss why sun appears reddish at sunrise and sunset while white during day time.

HARD

10th CBSE

IMPORTANT

SCIENCE PHYSICS>Chapter 2 - The Human Eye and The Colourful World>MOCK TEST QUESTION PAPER>Q 22

Ravi is keen upon donating his eyes so that anyone can see the world even after he dies. Do you also feel the same? What values are being depicted by Ravi here? What is the significance of eyes in the life of a person?