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Light Reflectio...

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  • Question 1
    1 / -0

    An object of length $$4 \ cm$$ is placed in front of a concave mirror at a distance of $$30 \ cm$$. The focal length of mirror is $$15\ cm$$. What will be the length of image?

  • Question 2
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    A ray of light travelling inside a rectangular glass block of refractive index $$\sqrt2$$ is incident on the glass-air surface at an angle o incidence of $$45^o$$.The refractive index of air is one. Under these conditions the ray will

  • Question 3
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    An object is placed at a distance of 40 cm in front of a concave mirror of focal length 20 cm. The image produced is:

  • Question 4
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    The path of a ray of light coming from air passing through a rectangular slab traced by four students are shown by figures A, B, C and D. Which one of them is correct?

  • Question 5
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    After tracing the path of a ray of light passing through a rectangular glass slab for four different values of the angle of incidence, a student reported his observations in tabular form as given below :


    S.No    		 <i<r< e

    I    		$${30^0}$$$${19^0}$$$${29^0}$$
    II$${40^0}$$$${28^0}$$$${40^0}$$
    III$${50^0}$$$${36^0}$$$${50^0}$$
    IV$${60^0}$$$${40^0}$$$${59^0}$$
    The best observation is :

  • Question 6
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    In the glass slab experiment,the correct placement of the protractor (or 'dec'),for measuring the angles of incidence and emergence,is shown in which figure?

  • Question 7
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    A point source of light is placed in front of a plane mirror, then :

  • Question 8
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    A printed page is seen through a glass slab placed on it. The printed words appear raised. This is due to :

  • Question 9
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    Which of the following (referred to as spherical mirror) depends on whether the rays are paraxial or not?

  • Question 10
    1 / -0

    An incident ray passing through the focus will be reflected :

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