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A prism causes dispersion of white light while a rectangular glass Mock does not. Explain
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0
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740
|
September 25, 2016
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A student finds the writing on the blackboard blurred and unclear while sitting on the last desk in a classroom
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1
|
6879
|
September 25, 2016
|
|
A student cannot read properly from the blackboard while sitting on the front desk in a classroom of a big size
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1
|
2799
|
September 25, 2016
|
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What kind of defect of vision is he suffering from?
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1
|
4006
|
September 25, 2016
|
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When one enters a dim-lit room from bright light, one is unable to see the object in the room for sometime
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1
|
3602
|
September 25, 2016
|
|
Why we have two eyes instead of one?
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|
0
|
902
|
September 25, 2016
|
|
Far point of a myopic person is 40 cm
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1
|
4886
|
September 25, 2016
|
|
The far point of a myopic person is 80 cm in front of the eyes
|
|
1
|
8546
|
September 25, 2016
|
|
A person with a defective eye-vision is unable to see the objects nearer than 1.5 m
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|
1
|
9324
|
September 25, 2016
|
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Demonstrate an activity with a well labelled diagram to prove that white light is made up of seven colours
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|
1
|
13943
|
September 25, 2016
|
|
Explain why colour of clear sky appears blue during the day with the help of diagram
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|
1
|
3911
|
September 25, 2016
|
|
List the parts of the human eye that control the amount of light entering into it. Explain how they perform this function
|
|
1
|
9716
|
September 25, 2016
|
|
A person cannot see the objects distinctly, when placed beyond 2 m
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|
1
|
8137
|
September 25, 2016
|
|
A person cannot see the objects distinctly, when placed at a distance less than 50 cm
|
|
1
|
12719
|
September 25, 2016
|
|
What is dispersion of white light?
|
|
1
|
6259
|
September 25, 2016
|
|
Name and explain the defects of vision
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|
1
|
1744
|
September 25, 2016
|
|
List any two natural phenomenon based on scattering of light
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|
1
|
9414
|
September 25, 2016
|
|
State one function each of iris, pupil, and cornea
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|
0
|
6792
|
September 25, 2016
|
|
Calculate maximum power of accommodation of a person having normal vision
|
|
1
|
6491
|
September 25, 2016
|
|
A person suffering from an eye-defect uses lenses of power -1D
|
|
1
|
5832
|
September 25, 2016
|
|
A narrow beam PQ of white light is passing through a glass prism ABC as shown in the diagram
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|
1
|
20771
|
September 25, 2016
|
|
A person is unable to read a book clearly when kept at a distance of 25 cm from his eye
|
|
1
|
5601
|
September 25, 2016
|
|
A beam of white light falling on a glass prism gets split up into seven colours marked 1 to 7 as shown in the diagram:
|
|
1
|
10743
|
September 25, 2016
|
|
With the help of a diagram, explain the formation of a rainbow in the sky
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|
0
|
17713
|
September 25, 2016
|
|
What is meant by dispersion of white light?
|
|
1
|
2074
|
September 25, 2016
|
|
A person cannot read a book at distances less than 50 cm
|
|
1
|
3048
|
September 25, 2016
|
|
Study the diagram below and answer the following questions:
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|
1
|
2023
|
September 25, 2016
|
|
Define dispersion of light
|
|
1
|
3286
|
September 25, 2016
|
|
Name the defect of vision he is suffering from
|
|
1
|
1842
|
September 25, 2016
|
|
A person is not able to see distinctly the object placed at large distances but is able to read the matter written on a book comfortably
|
|
1
|
1708
|
September 25, 2016
|