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Define focus and principal focus....

Define focus and principal focus.

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MODERN PUBLICATION-REFRACTION OF LIGHT-EXERCISE
  1. Define focus and principal focus.

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  2. Explain the phenomenon of refraction at a plane surface separating two...

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  3. Define refractive index in terms of velocity of light?

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  4. Prove the Relation : "^amub =1/("^bmua)

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  5. When a ray of light passes through a parallel slab of transport medium...

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  6. What is meant by lateral shift ?Explain for a given slab,what is the q...

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  7. Discuss refraction through a glass slab and show that emergent ray is ...

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  8. State generalized Snell's law for refration through multiple parallel ...

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  9. Show that apparent depth of a water tank is less than real depth.

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  10. Find relation for refractive index in terms of real depth and apparent...

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  11. What is normal shift?Explain.Obtain he expression for normal shift .In...

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  12. Write the conditions for total internal reflection to takeplace?

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  13. Obtain a relation between a critical angle and refractive index of med...

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  14. Obtain a relation between a critical angle and refractive index of med...

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  15. Obtain a relation between a critical angle and refractive index of med...

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  16. Obtain a relation between a critical angle and refractive index of med...

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  17. Write the conditions for total internal reflection to takeplace?

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  18. Explain total internal reflection. What are its conditions?

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  19. Obtain a relation between a critical angle and refractive index of med...

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  20. State the condition of total internal reflectoin to take place at an i...

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  21. Define critical angle for total internal reflection.

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