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Solve the following examples/ numerical problems:
An object of height 4cm is placed in front of a concave lens of focal length 40 cm. If the object distance is 60 cm, Find the position and height of the image .

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An object of height 4 cm is kept in front of a concave lens of focal length 20 cm. If the object distance is 30 cm, find the position and the height of the image .

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NAVNEET PUBLICATION-LENSES-EXERCISE
  1. Solve the following examples/ numerical problems: 5 cm high object i...

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  2. Doctor has prescribed a lens having power +1.5D. What will be the foca...

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  3. Solve the following examples/ numerical problems: An object of heigh...

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  4. An object is kept 60 cm from a lens gives a virtual image 20 cm in fro...

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  5. Solve the following examples/ numerical problems: < br > What is the p...

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  6. Solve the following examples/ numerical problems: The power of a con...

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  7. Calculate the focal length of a corrective lens having power+2.5D.

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  8. Solve the following examples/ numerical problems: Calculate the foca...

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  9. Three lenses having power 2, 2.5 and 1.7 D are kept touching in a row....

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  10. Solve the following examples/ numerical problems: Two convex lenses ...

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  11. Solve the following examples/ numerical problems: Two convex lenses ...

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  12. Solve the following examples/ numerical problems: < br > If a convex l...

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  13. Find the focal length of a convex lens which produces a real image at ...

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  14. Find the focal length of a convex lens which produces a virtual image ...

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  15. A real image is obtained at 30 cm from a convex lens of focal length 7...

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  16. An object is kept at 20 cm in front of a convex lens its real image is...

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  17. An object is kept at 10 cm in front of a convex lens . Its image is f...

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  18. An object is kept at 60 cm in front of a convex lens of focal length 1...

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  19. An object of height 2 cm is kept at 30 cm from a convex lens . Its rea...

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  20. If the power of a lens is 4 dioptres , find its focal length.

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