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Light Test - 39...

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  • Question 1
    1 / -0

    Which of the following animal's eyes are very small and they are also able to look all around

  • Question 2
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    There is a point in our eyes where no image is formed. That point is known as blind spot. Which animal do not have this blind spot?

  • Question 3
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    Two plane mirrors are placed such they make $$\displaystyle { 0 }^{ \circ }$$ angle with each other. How many images, of an object placed between them, are formed?

  • Question 4
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    A bird having large cornea and a large pupil to allow more light in the eye.

  • Question 5
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    If an object is placed symmetrically between two plane mirrors, inclined at an angle of $$72^0$$, then the total number of images formed is:

  • Question 6
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    How many images of a candle will be formed if it is placed between two parallel plane mirrors separated by 100 cm?

  • Question 7
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    In periscopes, the parallel rays entering the cylindrical tube from the upper end from an object, strike the plane mirror at an angle of _____ and hence are reflected through an angle of ________.

  • Question 8
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    Fill in the blank:

    When angle of incidence increases, glancing angle of incidence ________.

  • Question 9
    1 / -0

    In Braille system how are the dots made?

  • Question 10
    1 / -0

    How are dots arranged in cells of Braille system?

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