MEDIUM
10th CBSE
IMPORTANT
Earn 100

Give the cause of flattening of disc of sun at the time of 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>EXERCISES>Q 2
How does our eye see nearby as well as distant objects distinctly?
EASY
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 2 - The Human Eye and The Colourful World>EXERCISES>Q 2
A person cannot see nearby as well as distinct objects clearly. What defect of eye is he suffering from? What type of corrective lens is needed and why?
MEDIUM
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 2 - The Human Eye and The Colourful World>EXERCISES>Q 2
Why do we have two eyes instead of one?
EASY
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 2 - The Human Eye and The Colourful World>EXERCISES>Q 2
The ciliary muscles of normal eye are in their (i) most relaxed state (ii) most contracted state. In which case is the focal length of lens more? When does focal length of lens increase?
EASY
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 2 - The Human Eye and The Colourful World>EXERCISES>Q 2

How will you use two identical prisms so that a narrow beam of white light incident on one prism emerges out of second prism as white light? Draw the diagram.

EASY
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 2 - The Human Eye and The Colourful World>EXERCISES>Q 2
Is the position of star as seen by us its true position? Justify your answer.
EASY
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 2 - The Human Eye and The Colourful World>EXERCISES>Q 3
A person needs a lens of power -4.5 D for correction of her vision.
(a) What kind of defect is she suffering from?
(b) What is the focal length of corrective lens?
(c) What is the nature of corrective lens?
EASY
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 2 - The Human Eye and The Colourful World>EXERCISES>Q 3
What is the difference in colours of sun during sunrise/sunset and noon? Give explanation for each.