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An object is put at a distance of 5cm fr...

An object is put at a distance of 5cm from the first focus of a convex lens of focal length 10cm. If a real image is formed, its distance from the lens will be

A

15 cm

B

20 cm

C

25 cm

D

30 cm

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The correct Answer is:
D
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MOTION-RAY OPTICS-Exercise-1
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  2. A convex lens of Focal length of 40cm is in contact with a concave len...

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  3. An object is put at a distance of 5cm from the first focus of a convex...

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  4. Focal length of convex lens is f. If this lens is cut along parallel t...

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  5. In the figure shown, there are two convex lenses L(1) and L(2) having ...

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  6. What should be the value of distance d so that final image is formed o...

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  7. If the central portion of a convex lens is wrapped in black paper as s...

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  8. Focal length of a convex lens will be maximum for

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  9. A convex lens form a real image of a point object placed on its princi...

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  10. Shift on the principal axis

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  11. When the length of a microscope tube increases, its magnifying power

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  12. In a simple microscope, if the final image is located at infinity then...

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  13. In a simple microscope, if the final image is located at infinity then...

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  14. In astronomical telescope, the final image is formed at

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  15. Two convex lenses of focal lengths 0.3m and 0.05m are used to make a t...

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  16. An astronomical telescope has a magnifying power 10. The focal length ...

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  17. The magnifying power of an astronomical telescope can be increased, if...

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  18. If F(0) andF(e) are the focal lengths of the objective and eye-piece r...

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  19. A microscope is focused on a mark on a piece of paper and then a slab ...

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  20. An astronomical telescope of magnifying power 8 is made using two lens...

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