Self Studies

Ray Optics and ...

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  • Question 1
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    A fish in water sees an object 24 cm24\ cm above the surface of water. The height of object above the surface of water as it appear to the fish is 

  • Question 2
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    The image of an object formed by a device is always virtual and small. The device may be 

  • Question 3
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    A real image of a distant object is formed by a plano-convex lens on its principal axis. Spherical aberration is :

  • Question 4
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    A plane mirror is placed along the x-axis facing negative y-axis. The mirror is fixed. A point object is moving with 3i^+4j^3\hat { i } +4\hat { j } in front of the plane mirror. The relative velocity of image with respect to its object is

  • Question 5
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    Two mirrors at an angle θ\theta produce 5 images of a point. The number of images produced when θ\theta is decreased to θ30\theta - 30 is

  • Question 6
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    A glass prism of refractive index 1.51.5 is immersed in water (refractive index 4/34/3). A light beam incident normally on the face:ABAB as shown in the figure is totally reflected to reach the face BCBC if:

  • Question 7
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    A light ray is incident at an angle of 45o{45}^{o} with the normal to a 2cm\sqrt {2}cm thick plate (μ=2\mu =\sqrt2). Find the shift in the path of the light as it emerges out from the plate.

  • Question 8
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    In the given situation, a spherical transparent surface of radius RR is placed. The refractive index of sphere is such that image for an object kept at distance RR  is formed at the same distance of the opposite side. What is refractive index of sphere?

  • Question 9
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    An air bubble is inside water. The refractive index of water is 4/34/3. At what distance from the air bubble should a point object be placed so as to form a real image at the same distance from the bubble?

  • Question 10
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    An equilateral prism deviates a ray through 4545^{\circ} for the two angles of incidence differing by 20.20^{\circ}. The angle of incidence is

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