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Why does a convex mirror is said to have...

Why does a convex mirror is said to have a virtual principal focus?

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Explore conceptually related problems

What is convex mirror?

Why is convex mirror used as a rearview mirror in vehicles?

A virtual, erect and enlarged image is formed by a concave mirror, if the object is placed between the principal focus and centre of curvature of the mirror.

A ray passing through the principal focus of a concave mirror or a ray which is directed towards the principal focus of a convex mirror, is reflected back along the same path.

Why does a dentist use a concave mirror?

BINA LIBRARY-ELECTRONIC DEVICES-EXERCISE
  1. With the help of suitable diagram, explain the formation of depletion ...

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  2. With the help of suitable diagram, explain the formation of depletion ...

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  3. Why does a convex mirror is said to have a virtual principal focus?

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  4. Explain why a ray of light passing through the centre of curvature of ...

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  5. Draw circuit diagram to describe the working of a p-n junction as full...

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  6. What is LED ? State two advantages of LED over incandescent lamps.

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  7. What is breakdown voltage of a Zener diode? Explain its use as a volta...

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  8. What is the nature of the image formed by a concave mirror if the magn...

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  9. What is secondary emission?

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  10. Which property of concave mirror is utilised for using them as shaving...

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  11. What is NOT gate. Give its truth table.

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  12. Draw a OR gate and write its truth table.

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  13. What is NOT gate. Give its truth table.

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  14. What is semiconductors? Give examples.

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  15. Why does a ray of light bend when it travels from one medium into anot...

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  16. What is lens maker's formula?

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  17. What is convex lens ?

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  18. Why is the base of a transistor thin and low doped?

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  19. Why is common emitter amplifier preferred over common base amplifier?

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  20. Why transistor can't be used as a rectifier?

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