MEDIUM
10th CBSE
IMPORTANT
Earn 100

The far point of a myopic person is 80 cm in front of the eye. What is the nature and power of the lens required to correct the problem?

Important Questions on The Human Eye and the Colourful World

MEDIUM
10th CBSE
IMPORTANT
SCIENCE [PHYSICS] Class-10>Chapter 5 - The Human Eye and the Colourful World>Summative Assessment>Q 15
Give reasons for the following:
The sun can be seen about two minutes before actual sunrise.
MEDIUM
10th CBSE
IMPORTANT
SCIENCE [PHYSICS] Class-10>Chapter 5 - The Human Eye and the Colourful World>Summative Assessment>Q 15

Give reasons for the following:

We cannot see an object clearly if it is placed very close to the eyes.

MEDIUM
10th CBSE
IMPORTANT
SCIENCE [PHYSICS] Class-10>Chapter 5 - The Human Eye and the Colourful World>Summative Assessment>Q 16
How do you account for the red colour of the sun during sunrise and sunset?
MEDIUM
10th CBSE
IMPORTANT
SCIENCE [PHYSICS] Class-10>Chapter 5 - The Human Eye and the Colourful World>Summative Assessment>Q 17
The sun near the horizon appears flattened at sunset and sunrise. Explain why?
MEDIUM
10th CBSE
IMPORTANT
SCIENCE [PHYSICS] Class-10>Chapter 5 - The Human Eye and the Colourful World>Summative Assessment>Q 18
The sun is visible to us about two minutes before actual sunrise and about two minutes after the actual sunset. Give reasons.
MEDIUM
10th CBSE
IMPORTANT
SCIENCE [PHYSICS] Class-10>Chapter 5 - The Human Eye and the Colourful World>Summative Assessment>Q 19
Describe an experiment to show that different colours of white light can be recombined to form white light.
MEDIUM
10th CBSE
IMPORTANT
SCIENCE [PHYSICS] Class-10>Chapter 5 - The Human Eye and the Colourful World>Summative Assessment>Q 20
What is presbyopia? Write two causes of this defect?
HARD
10th CBSE
IMPORTANT
SCIENCE [PHYSICS] Class-10>Chapter 5 - The Human Eye and the Colourful World>Summative Assessment>Q 21
How can we determine the focal length and power of the concave lens required to correct a myopic eye?