Self Studies

Human Eye and C...

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  • Question 1
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    After looking the sun the colour of other things appears 

  • Question 2
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    A person suffering from short-sightedness can see clearly only upto a distance of 2 metres. Find the power of the lens required to correct his vision

  • Question 3
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    The phenomenon of splitting of sunlight by a prism is called_________  and the color that deviates most is ______

  • Question 4
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    Hypermetropia is possible in.........

  • Question 5
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    A student of class  10,   10,  is not able to see clearly the black board question when seated at a distance of 5 m 5  \mathrm{m}  from the board,the defect he is suffering from is

  • Question 6
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    A person cannot see the object beyond 200cm. The power of lens used to  correct the vision will be :

  • Question 7
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    The principle section of a glass prism is isosceles triangle ABC with AB=AC, the face AC is silvered. A ray of light is incident normally on the face AB and after two reflections, it emerges from the base BC perpendicular to the base. Angle of BAC of the prism is 

  • Question 8
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    A ray falls on a prism ABC (AB = BC) and travels as shown in figure. The minimum refractive index of the prism material should be 

  • Question 9
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    The eyes defect represented by the figure is 

  • Question 10
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    Assume nothing else blocks their view, approximately how far can two people stand from each other in clear atmosphere until they can no longer see each other due to the curvature of the Earth? [Take radius of earth =6400 km= 6400 \ km]
    (Assume height of each person is 2 m2 \ m.)

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