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The HUMAN EYE AND COLOURFUL WORLD

Test

Nov 16, 7:35 PM

150 minutes

Nov 16, 10:05 PM

47.0 marks

MCQ

38 questions

manish sahu

MTECH (IIT DELHI)

Class Details

Maths

10th

Maths

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Integers

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Triangles

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Nov 27, 2021

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Quadrilaterals

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Nov 25, 2021

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Probability

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Nov 25, 2021

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Chapter 2

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Nov 23, 2021

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Gravitation

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Nov 23, 2021

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Polynomials

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Nov 23, 2021

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Atom And Molecules

class-9th

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Nov 22, 2021

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Maths

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Science

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Nov 22, 2021

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class-7th

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Nov 22, 2021

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Chapter 1

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Nov 22, 2021

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Maths

class-10th

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Nov 21, 2021

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Quadrilateral

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Nov 19, 2021

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Light

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Nov 19, 2021

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class-7th

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Nov 18, 2021

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Maths

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Science

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Nov 18, 2021

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Science

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Nov 18, 2021

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Light

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Nov 17, 2021

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Motion

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Nov 17, 2021

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Question Text

Question 1 :
The split of white light into its constituent colours by a triangular prism is called ________ .<br/>

Question 2 :
The rising and setting of sun appear red because of : 

Question 3 :
Intensity of light ray in a directionafter scattering by small particles (smaller than wavelength):

Question 4 :
Why do high rise buildings have a red light on the top of the building?

Question 5 :
Fill in the blank spaces by choosing the correct word.A prism is a piece of transparent material having three rectangular surfaces and .......... triangular surfaces.

Question 6 :
During dispersion through prism, red light travels fastest and violet travels slowest of all the seven colours. As a result:

Question 7 :
Which of the following quantities changes during the process of scattering?

Question 8 :
As the thickness of the atmosphere increases colour of scattered light is found in ________order.

Question 10 :
The dispersion of white light occurs because the angle of....................... of different colours is different when passing through the glass prism.

Question 12 :
The color of scattered light depends on ____ of the scattering particles.

Question 16 :
In context of scatteringFine particles : ____ wavelength : : large particles : _____ wavelength

Question 17 :
The rising and setting of sun appear red because of : 

Question 18 :
For the angle of minimum deviation of a prism to be equal to its refracting angle, the prism must be made of a material whose refractive index lies between:

Question 21 :
Which colour of light is scattered the most(maximum) in the atmosphere?

Question 22 :
CV Raman got the Nobel Prize for his experiment on :

Question 24 :
In the white light of sun, maximum scattering by the air molecules present in the earth's atmosphere is for:<br>

Question 25 :
Which of the following observations cannot be explained by Tyndall Effect?

Question 26 :
Why astronauts see dark sky in space unlike blue sky on earth:

Question 28 :
The spectrum, in which the colours are separated using a narrow source of light, is called:

Question 31 :
The path of beam of light becomes _____ in a colloidal solution.

Question 34 :
Assertion: The setting sun appears to be red. <br>Reason: Scattering of light is directly proportional to the wavelength.

Question 36 :
In a beaker containing colloidal solution of sodium thiosulphate and a drop of con. sulphuric acid, light observed from side of beaker is:

Question 37 :
Assertion: Fine particles in atmosphere scatter the light of shorter wavelength more. Reason: Sky appears blue.

Question 38 :
The process of re-emission of absorbed light in all directions with different intensities by the atom or molecule is called ____________.

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