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A convergeing lens is used to form an im...

A convergeing lens is used to form an image on a screen.When the upper half of the lens is converd by an opaque screen,

A

half the image will disappear

B

comoplete image will be formed

C

intensity of image will decrease

D

intensity of image will increase.

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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
  1. A convex lens A of focal length 20 cm and a concave lens B of focal le...

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  2. The size of the image of an object,which is at infinity, as formed by ...

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  3. A convergeing lens is used to form an image on a screen.When the upper...

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  4. A point object is placed at a distance of 20 cmA point object is place...

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  5. A biconvex lens of focal length 15 cm is in front of a plane mirror.Th...

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  6. A concave lens of glass, refractive index 1.5 ,has both surfaces of th...

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  7. A double convex lens made from a material of refractive index mu1 is i...

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  8. A convex lens is in contact with concave lens .The magnitude of the ra...

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  9. A hollow doublew concave lens is made of very thin transparent materia...

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  10. A biconvex of focal length forms a circular image of radius r of sun ...

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  11. A real image of a distant object is formed by a plano-convex lens on i...

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  12. A ray of light passes through an equilateral glass prism,such that ang...

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  13. A ray of light is incident on an equilateral glass prism placed on a h...

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  14. A given ray of light suffers minimum deviation in an equilateral prism...

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  15. A thin prism of angle 15^@ made of glass of refractive index = 1.5 is...

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  16. White ligth is incident on the interface of glass and air as shown in ...

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  17. A beam of light consisting of red, green and blue and is incident on a...

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  18. Which one of the following spherical lenses does not exhibit dispersio...

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  19. In a compound microscope,the intermediate image is

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  20. The focal length of the objective of a microscope is

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