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A convex lens of focal length f and a pl...

A convex lens of focal length f and a plane mirror are y distance apart. An object O is kept on the principal axis of the lens at a distance x from the lens. The values of x and y for the final image of O to fall exactly (position and size) on the object O are :

A

20 cm

B

30 cm

C

40 cm

D

50 cm

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The correct Answer is:
A
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AAKASH SERIES-GEOMETRICAL OPTICS-ADDITIONAL PRACTICE EXERCISE -I (LEVEL-II LECTURE SHEET (ADVANCED) STRAIGHT OBJECTIVE TYPE QUESTIONS)
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  3. A ray of light is incident at an angle of 75^(@) into a medium having ...

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  4. A beam of parallel rays of width b cm propagates in glass at an angle ...

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  5. A small object of height 0.5 cm is placed in front of a convex surface...

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  6. A ball is kept at a height h above the surface of a heavy transparent ...

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  7. A ring of radius 1cm is placed 1m in front of a spherical glass ball...

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  8. The radii of curvature of two spherical surfaces of a concave convex l...

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  9. A light ray travelling parallel to the principal axis of a convex lens...

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  10. Twot thin lenses when placed in contact, then the power of combination...

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  11. A convex lens is placed some where between an object and a screen whic...

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  12. A point object moves along the principal axis of a convex lens of foca...

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  13. A thin plano-convex lens of focal length f is split into two halves. O...

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  14. A converging lens L(1) of focal length 20 cm is separated by 8 cm from...

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  15. A point object is placed at a distance of 20 cm from a thin plano-conc...

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  16. A convex lens of focal length f and a plane mirror are y distance apar...

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  17. A point object O is placed at a distance of 0.3m from a convex lens (f...

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  18. A small object stuck on the surface of a glass sphere (n=1.5) is viewe...

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  19. A plano-convex lens has thickness 4cm. When places on a horizontal tab...

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  20. In the given diagram find the position where the equivalent lens can b...

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