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What do you mean by -ve and +ve sign of ...

What do you mean by -ve and +ve sign of magnification ?

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Negative magnification signifies a real and iverted image and positive sign of magnification means a virtual and erect image.
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U-LIKE SERIES-LIGHT - REFLECTION AND REFRACTION -VERY SHORT ANSWER QUESTIONS
  1. Define optical centre of a spherical lens.

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  2. Define a lens.

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  3. When a convex lens is focussed on a distant object, where will the ima...

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  4. Define power of a lens and write its SI unit.

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  5. Write the relationship between the SI unit of the power of a lens and ...

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  6. Redraw the given diagram and show the path of the refracted ray.

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  7. An image of the same size of an object is formed in a convex lens. Whe...

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  8. Name the type of lens used to obtain (i) an erect, enlarged and virtua...

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  9. Redraw the given diagram and show the path of the refracted ray.

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  10. State the condition under which a light ray passes undeviated through ...

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  11. Redraw the given diagram and show the path of the refracted ray.

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  12. Name the lens which can be used as a magnifying glass.

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  13. Which type of lens has a negative power ?

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  14. Two thin lenses of power P(1) and P(2) are placed in contact. What is ...

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  15. What is the difference between virtual image of an object formed by a ...

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  16. During its passage from one medium to another, where does a light ray ...

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  17. The refractive index of glass is 1.5. What is meant by this statement ...

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  18. Refractive index of glass, kerosene and water are 1.5, 1.44 and 1.33 r...

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  19. The power of a lens is +5 D. Find its focal length in metres.

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  20. What do you mean by -ve and +ve sign of magnification ?

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