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Ray Optics and ...

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  • Question 1
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    A convex and a concave mirror of radii 10 cm each are facing each other and 15 cm apart. A point object is placed midway between them. Then position of the final image if the reflection first takes place at the concave mirror and then in the convex mirror is

  • Question 2
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    When the object is located at the F of a concave mirror then

  • Question 3
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    The focal length of a convex lens (refractive index = 1.5) in air is 20 cm. When immersed in water (refractive index = 1.33), its focal length will be​

  • Question 4
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    In Concave Mirror

  • Question 5
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    In mirrors how can we differentiate real image from the virtual image

  • Question 6
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    ______ mirror is called as diverging mirror

  • Question 7
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    Newtonian reflecting type telescope uses

  • Question 8
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    A convex lens has a focal length of 10cm. What is the power of the lens?

  • Question 9
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    In a concave mirror when the object is located beyond C the magnification is

  • Question 10
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    An image is upright and reduced in size. Which mirror is used to form such an image?

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