Test Details

Colourfull World

Based on MCQ

Dec 01, 2:00 PM

90 minutes

Dec 01, 12:00 PM

74.0 marks

MCQ

58 questions

3076 Ankit Pandey(Gau)

I feel like I'd describe myself as an emotional taco. Hard on the the outside and everything on the inside eventually ends up coming out and making a mess of things.

Class Details

English

10th

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Question Text

Question 1 :
Why are red coloured lights are used in traffic signals to stop the vehicles?

Question 2 :
The path of a beam of light is invisible in which solution?

Question 4 :
A defect of vision caused due to excessive curvature of the cornea is:

Question 6 :
Assertion: A beam of white light gives a spectrum on passing through a hollow prism. Reason: Speed of light outside the prism is different from the speed of light inside the prism.

Question 9 :
When white light enters a prism, its gets splits into its constituent colours. This is because of:

Question 11 :
State whether true or false :Myopia is caused due to the high converging power of the eye lens.

Question 14 :
Intensity of light ray in a directionafter scattering by small particles (smaller than wavelength):

Question 16 :
The split of white light into its constituent colours, by a triangular prism, is known as:

Question 18 :
A man can see vertical lines but he is unable to see the horizontal lines placed at the same distance. What type of lens he should use?

Question 19 :
By which optical phenomena the splitting of white light into seven constituent colours occur?

Question 21 :
In context of scatteringFine particles : ____ wavelength : : large particles : _____ wavelength

Question 22 :
Which of the following phenomena contributes significantly to the reddish appearance of the sun at sunrise or sunset?

Question 25 :
Which of the following lens is used to minimise hypermetropia ?

Question 27 :
CV Raman got the Nobel Prize for his experiment on :

Question 32 :
The bluish colour of water in deep sea is due to:

Question 34 :
Name the prism required for obtaining the spectrum of infra red radiation

Question 35 :
Why astronauts see dark sky in space unlike blue sky on earth:

Question 36 :
At which place in eye,image is formed of a person is far-sightedness (hypermetropia) ?

Question 38 :
The spectrum, in which the colours are separated using a narrow source of light, is called:

Question 40 :
The dispersion of white light occurs because the angle of....................... of different colours is different when passing through the glass prism.

Question 41 :
Which colour of light is scattered the most(maximum) in the atmosphere?

Question 45 :
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 46 :
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 48 :
As the thickness of the atmosphere increases colour of scattered light is found in ________order.

Question 51 :
Assertion: A piece of red glass is heated till it glows in dark. The colour of glowing glass would be orange. Reason: Red and orange is complementary colours.

Question 52 :
At sunrise or sunset, the sun appears to be reddish white. This is because :

Question 54 :
During scattering of light, the amount of scattering is inversely proportional to ________ of wavelength of light.

Question 55 :
A person is wearing spectacles with concave lenses for correcting vision. While not using the glasses, the image of a distant object in his case will be formed

Question 56 :
The process of re-emission of absorbed light in all directions with different intensities by the atom or molecule is called ____________.

Question 58 :
The angular magnification of telescope is $30$. If all the light which passes through objective lens of diameter $80 cm$ also passes through eye piece lens then find out diameter of eye piece lens.

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