EASY
10th CBSE
IMPORTANT
Earn 100

To an astronaut, why does the sky appears dark instead of blue?

Important Questions on Human Eye and Colourful World

HARD
10th CBSE
IMPORTANT
Core Science Physics>Chapter 2 - Human Eye and Colourful World>EXERCISE - 2B>Q 1
Explain the refraction of light through a triangular glass prism using a labelled ray diagram. Hence, define the angle of deviation.
MEDIUM
10th CBSE
IMPORTANT
Core Science Physics>Chapter 2 - Human Eye and Colourful World>EXERCISE - 2B>Q 2
How can we explain the reddish appearance of sun at sunrise or sunset? Why does it not appear red at noon?
HARD
10th CBSE
IMPORTANT
Core Science Physics>Chapter 2 - Human Eye and Colourful World>EXERCISE - 2B>Q 3
Explain the phenomenon of dispersion of white light through a glass prism, using suitable ray diagram.
HARD
10th CBSE
IMPORTANT
Core Science Physics>Chapter 2 - Human Eye and Colourful World>EXERCISE - 2B>Q 4
How does refraction take place in the atmosphere? Why do stars twinkle but not the planets?
HARD
10th CBSE
IMPORTANT
Core Science Physics>Chapter 2 - Human Eye and Colourful World>EXERCISE - 2B>Q 5
What is dispersion of white light? What is the cause of such dispersion? Draw a diagram to show dispersion of white light by a glass prism.
HARD
10th CBSE
IMPORTANT
Core Science Physics>Chapter 2 - Human Eye and Colourful World>EXERCISE - 2B>Q 5
A glass prism is able to produce a spectrum when white light passes through it, but a glass slab does not produce any spectrum. Explain, why it is so?
HARD
10th CBSE
IMPORTANT
Core Science Physics>Chapter 2 - Human Eye and Colourful World>EXERCISE - 2B>Q 6
Explain how the ray of white light is dispersed. Why does this take place? Which colour deviates more? Why?