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A lens forms an upright and diminished i...

A lens forms an upright and diminished image of an object when the object is placed at the focal point of the given lens.
Draw a ray diagram to show the image formation.

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AB is the object and A.B. is the image.
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A lens forms an upright and diminished image of an object when the object is placed at the focal point of the given lens. Name the lens.

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If the image formed by a lens for all positions of an object placed in front of it is always erect and diminished, what is the nature of this lens ? Draw a ray diagram to justify your answer. If the numerical value of power of this lens is 10 D, what is its focal length in cartesian system ?

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ICSE-SAMPLE QUESTION PAPER 5 -SECTION B
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  2. A lens forms an upright and diminished image of an object when the obj...

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  3. A lens forms an upright and diminished image of an object when the obj...

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  4. What is the function of a fuse?

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  5. Name the principle on which fuse works.

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  6. To Which wire does the fuse is connected?

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  7. A type of electromagnetic wave has wavelength 50 Å. Name the wave.

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  8. A type of electromagnetic wave has wavelength 50 Å. What is the spee...

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  9. A type of electromagnetic wave has wavelength 50 Å. State one use of...

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  10. Find the equivalent resistance between A and B.

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  11. State whether the resistivity of a wire changes with the change in the...

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  12. In a laboratory experiment to measure specific heat capacity of copper...

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  13. In a laboratory experiment to measure specific heat capacity of copper...

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  14. In a laboratory experiment to measure specific heat capacity of copper...

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  15. State Ohm's law? How can it be varified experimentally ? Does it hold ...

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  17. A man spend 6-4 KJ energy in displacing a body by 64 m in the directio...

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  18. A man spend 6-4 KJ energy in displacing a body by 64 m in the directio...

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  19. Which of the two wires of similar dimensions, copper or nichrome, woul...

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  20. Two fuse wires are rated 5 A and 20 A. Which of the two is (i) thicker...

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