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Ray Optics Test...

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  • Question 1
    4 / -1

    Match List I with List II and select the correct answer using the codes given below the lists :

  • Question 2
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    A concave mirror gives an image three times as large as the object placed at a distance of 20 cm from it. For the image to be real, the focal length should be

  • Question 3
    4 / -1

    The minimum distance between the object and its real image for concave mirror is

  • Question 4
    4 / -1

    A point object is placed at a distance of 10 cm and its real image is formed at a distance of 20 cm from a concave minor. If the object is moved by 0.1 cm towards the mirror, the image will shift by about

  • Question 5
    4 / -1

    The focal length of a convex mirror is 20 cm its radius ofcurvature will be

  • Question 6
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    A concave mirror of focal length 15 cm forms an image having twice the linear dimensions of the object. The position of the object when the image is virtual will be

  • Question 7
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    A point object is placed at a distance of 30 cm from a convex mirror of focal length 30cm. The image will form at

  • Question 8
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    If the lower half of a concave mirror\'s reflecting surface is made opaque, which of the following statements describe the image of an object placed infront of the mirror?
    S1 : Intensity of the image will increase.
    S2 : The image will show only half of the object.
    S3 : No change in the image.
    S4 : Intensity of the image will be reduced to half.

  • Question 9
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    The ratio of the refractive index of red light to blue light in air is

  • Question 10
    4 / -1

    The refractive index of a piece of transparent quartz is the greatest for

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