EASY
10th CBSE
IMPORTANT
Earn 100

Why does the sun appear red during sunrise or sunset? Explain.

Important Questions on Human Eye and Colourful World

EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 2 - Human Eye and Colourful World>EXERCISE - 2B>Q 12
Why are orange coloured lights used by the motorists as fog lights? Explain.
EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 2 - Human Eye and Colourful World>EXERCISE - 2B>Q 13
Why is red coloured light used as a universal signal for danger? Explain.
MEDIUM
10th CBSE
IMPORTANT
Core Science Physics>Chapter 2 - Human Eye and Colourful World>EXERCISE - 2B>Q 14
How will you use two identical prisms so that a narrow beam of white light incident on one prism emerges out of the second prism as white light? Draw the diagram. 
EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 2 - Human Eye and Colourful World>EXERCISE - 2B>Q 15
Draw a ray diagram showing the dispersion through a prism when a narrow beam of white light is incident on one of its refracting surfaces. Also indicate the order of the colours of the spectrum obtained. 
HARD
10th CBSE
IMPORTANT
Core Science Physics>Chapter 2 - Human Eye and Colourful World>EXERCISE - 2B>Q 16
Is the position of a star as seen by us its true position? Justify your answer.
HARD
10th CBSE
IMPORTANT
Core Science Physics>Chapter 2 - Human Eye and Colourful World>EXERCISE - 2B>Q 17
Why do we see a rainbow in the sky only after rainfall?
EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 2 - Human Eye and Colourful World>EXERCISE - 2B>Q 18
Why is the colour of the clear sky blue?
MEDIUM
10th CBSE
IMPORTANT
Core Science Physics>Chapter 2 - Human Eye and Colourful World>EXERCISE - 2B>Q 19
What is the difference in colours of the Sun observed during sunrise/sunset and noon? Give explanation for each.