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Which spherical mirror has a real focus ...

Which spherical mirror has a real focus and which one has a virtual focus ?

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The correct Answer is:
(a) Convex mirror (b) Concave mirror
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Assertion A mirror has only one focus, while that of lens has two focii. Reason Both the focii of a mirror coincide at one point.

LAKHMIR SINGH & MANJIT KAUR-REFLECTION OF LIGHT -Exercise
  1. Which spherical mirror has a real focus and which one has a virtual fo...

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  2. Out of convex mirror and concave mirror, whose focusl is situated behi...

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  3. Find the focal length of a concave mirror whose radius of carvature is...

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  4. If the focal length of a convex mirror is 25 cm, what is its radius of...

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  5. Fill in the following blanks with suitable words. (a) Parallele rays...

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  6. What is a spherical mirror, ? Distinguish between a concave mirror and...

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  7. Name the two types of spherical mirrors. What type of mirror is repres...

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  8. What is the relation between the focal length and radius of curvature ...

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  9. Explain with a suitable diagram, how a concave mirror converges a para...

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  10. Describe with a suitable diagram, how a convex mirror diverges a paral...

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  11. Define (a) centre of curvature (b) radius of curvature ( c) pole (d) p...

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  12. In a convex spherical mirror, reflection of light takes place at :

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  13. A diverging mirror is :

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  14. If R is the radius of curvature of a spherical mirror and f is its len...

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  15. The focal length of a spherical mirror of radius of curvature 30 cm is...

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  16. If the focal length of a spherical mirror is 12.5 less cm, its radius ...

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  17. A communications satellite in orbit sends a parallel beam of signals ...

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  18. When a spherical mirror is held towards the sun and its sharp image is...

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  19. For what position of an object, a concave mirror forms a real image e...

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  20. Where should an object be placed in front of the mirror so as to obtai...

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