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Ray Optics Test...

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  • Question 1
    4 / -1

    A thin oil layer floats on water. A ray of light making an angle of incidence of 40° shines on oil layer. The angle of refraction of light ray in water is
    ( μoil = 1.45, μwater = 1.33

  • Question 2
    4 / -1

    Velocity of light in a medium is 1.5 × 108 m/s. Its refractive index will be

  • Question 3
    4 / -1

    The wavelength of sodium light in air is 5890 Å. The velocity of light in air is 3 × 108 ms–1. The wavelength of light in a glass of refractive index 1.6 would be close to

  • Question 4
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    The mean distance of sun from the earth is 1.5 × 108 km (nearly). The time taken by the light to reach earth from the sun is

  • Question 5
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    Refractive index of air is 1.0003. The correct thickness of air column which will have one more wavelength of yellow light (6000 Å) than in the same thickness in vacuum is

  • Question 6
    4 / -1

    An astronaut in a spaceship see the outer space as

  • Question 7
    4 / -1

    Speed of light is maximum in

  • Question 8
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    If the wavelength of light in vacuum be λ, the wavelength in a medium of refractive index n will be

  • Question 9
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  • Question 10
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    A ray of light strikes a transparent rectangular slab (of refractive index √2 ) at an angle of incidence of 45°. The angle between the reflected and refracted rays is

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