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Ray Optics Test...

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  • Question 1
    1 / -0

    For a rectangular slab, refraction takes place at

  • Question 2
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    A ray of light from a denser medium strikes a rarer medium at an angle of incidence i. The reflected and refracted rays make an angle of 90o with each other. The angles of reflection and refraction are r and r', respectively. The critical angle is

  • Question 3
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    If the separation between a screen and a source is increased by 2%, what would be the effect on the intensity?

  • Question 4
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    A slit of width 'a' is illuminated by red light of wavelength 6500 Å. If the first minimum falls at θ = 30o, then the value of 'a' is

  • Question 5
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    If white light is used in the Newton's rings experiment, the colour observed in the reflected light is complementary to that observed in the transmitted light through the same point. This is due to :

  • Question 6
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    According to Cartesian sign convention, the heigFocal length of a mirror is given byhts measured

  • Question 7
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    A short pulse of white light is incident from air to a glass slab at normal incidence. After travelling through the slab, the first colour to emerge is

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