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The focal length of a cancave lens is ne...

The focal length of a cancave lens is negative.
True/False

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NAVNEET PUBLICATION - MAHARASHTRA BOARD-LENSES-True and False
  1. A concave lens always forms a virtual image. True/False

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  2. Due to the light sensitive cells in the eye, we get information about ...

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  3. The focal length of a cancave lens is negative. True/False

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  4. The magnification producted by a convex lens is positive or negative d...

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  5. The magnification producted by a convex lens is positive or negative d...

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  6. A concave lens is used as a magnifying glass.

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  7. A convex lens is used as a simple microscope . True/False

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  8. A concave lens is used to correct myopia. True/False

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  9. A convex lens is used to correct hypermetropia. True/False

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  10. When red light falls on the eyes , the cells responbing to red light ...

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  11. When an object is placed in front of a concave lens , its image is obt...

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  12. The image formed by a concave lens is always virtual.

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  13. The principal focurs of a convex lens is virtual.

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  14. An object of height 2 cm forms an image of height 3 cm when placed in ...

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  15. Absence of rod like cells results in colour blindness. True/False

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  16. Nearsightedness can be corrected using spectacles having convex lenses...

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  17. Farsightedness can be corrected using spectacles having lenses of suit...

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  18. As one grows old, ciliary muscles become weak. True/false

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  19. In a simple microscope, the object is placed within the focal length o...

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  20. A compound microscope forms an erect and real image of a small object.

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