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Science : Ch 11 – The Human Eye and the Colourful World

This test is designed based on NCERT Syllabus for Class 10 Topics : The Human Eye and the Colourful World

  • Each time random 15 questions will be displaced
  • So retake the quiz till you have mastered all the questions

1 / 15

The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light:

2 / 15

The sun appears red at sunset or sunrise. Choose the incorrect statement from the following

3 / 15

A student traces the path of a ray of light through a triangular glass prism for diferent values of angle of incidence. On analysing the ray diagrams, which one of the following conclusions is he likely to draw?

4 / 15

Arjun remarked that he has seen wavering of objects when seen through a stream of hot air rising above a tandoor or a fire. He said that the air just above the fire becomes hotter than the air further higher up. He further said that this wavering can also be seen in the earth’s atmosphere as the earth’s atmosphere is not evenly distributed ,Name two observations which can be explained by the above phenomenon.

5 / 15

Arpit remarked that he has seen wavering of objects when seen through a stream of hot air rising above a tandoor or a fire. He said that the air just above the fire becomes hotter than the air further higher up. He further said that this wavering can also be seen in the earth’s atmosphere as the earth’s atmosphere is not evenly distributed ,What is the total time diference on duration of day on earth?

6 / 15

Why don’t planets twinkle?

7 / 15

What would have been the colour of sky if the earth had no atmosphere

8 / 15

Milk is a colloid that contains globules of fat and protein. When a beam of light is directed at a glass of milk the light is scattered. That is a great example

9 / 15

The effect seen Color of the sky during Sunrise and Sunset

10 / 15

The density of the atmosphere, as we know goes on decreasing as the distance above the sea level increases,this phenomeneon is called

11 / 15

The defect in a person can see nearby objects but not far away objects

12 / 15

Lenses which have both concave and convex structure.

13 / 15

Astigmatism can be corrected

14 / 15

The colour of the clear sky blue due to

15 / 15

Visible spectrum is the band of coloured components of a

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