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Wave Optics Tes...

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  • Question 1
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    A plane wavefront $$AB$$ incident on a concave mirror as shown. Then, the wavefront just after reflection is

  • Question 2
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    Which of the following is a unit for intensity of light?

  • Question 3
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    The magnifying power of an astronomical telescope is $$8$$, then the ratio of the focal length of the objective to the focal length of the eyepiece is : (final image is at $$\displaystyle \infty $$)

  • Question 4
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    Which of the following statements applies to light?

  • Question 5
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    A photographer changes the aperture of his camera and reduces it to half of the original aperture. The exposure time now should be:

  • Question 6
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    If a star is moving towards earth then the spectrum lines are shifted towards

  • Question 7
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    Wave front means:

  • Question 8
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    Evidence for the expanding universe is given by _______ of light spectrum received from them.

  • Question 9
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    By corpuscular theory of light, the phenomenon which can be explained is ____________.

  • Question 10
    1 / -0

    Which of the following statements about the behaviour of light is not correct?

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