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Define the principal focus of a concave ...

Define the principal focus of a concave mirror.

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When light rays, parallel and close to the principal axis, are incident on a concave mirror, after reflection they meet (or converge) to a point on the principal axis of the mirror. This point is called as the Principal focus (F) of the concave mirror. Concave mirror is therefore called a Converging mirror.
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ZEN PUBLICATION-LIGHT - REFLECTION AND REFRACTION-ZEN ADDITIONAL QUESTIONS SECTION (LONG ANSWER [LA] QUESTIONS)
  1. Define the principal focus of a concave mirror.

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  2. Draw ray diagrams showing the image formation by a concave mirror when...

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  3. Draw ray diagrams showing the image formation by a convex lens when an...

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  4. Write laws of refraction. Explain the same with the help of ray diagra...

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  5. Draw ray diagram showing the image formation by a concave lens when an...

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  6. Draw ray diagrams showing the image formation by a convex mirror when ...

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  7. Suppose you have three concave mirrors A, B, C of focal lengths 10 cm,...

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  8. If the image formed by a spherical mirror for all positions of the obj...

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  9. Where is this mirror used and why ?

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  10. Define the radius of curvature of a spherical mirror. Find the nature ...

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  11. Analyse the observation table which shows variation of image distance ...

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  12. To find the image - distance for varying object - distance in the case...

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  13. A student wants to project the image of a candle flame on a screen 48 ...

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  14. The image of an object formed by a mirror is real, inverted and is of ...

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  15. An object placed between the pole and focus of a concave mirror produc...

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  16. What is meant by power of a lens ? You have three lenses A, B, C of po...

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  17. Draw ray diagrams showing the image formation by a concave mirror when...

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  18. Draw ray diagrams showing the image formation by a convex lens when an...

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  19. Write laws of refraction. Explain the same with the help of ray diagra...

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  20. Draw ray diagram showing the image formation by a concave lens when an...

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  21. Draw ray diagrams showing the image formation by a convex mirror when ...

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