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If a completely transparent object has t...

If a completely transparent object has to be made totally invisible in vacuum, what should be the value of its refractive index?

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A beam of parallel light rays are incident on a surface of a glass plate at angle 60^(@) . If the reflected rays from the glass surface get totally poarised-(i) What would be the magnitude of refracted angle? (ii) What is the refractive index of glass?

CHHAYA PUBLICATION-REFRACTION OF LIGHT-EXERCISE Very Short Answer or two Question (Mark1)
  1. A transparent cube of glass of refractive index mu and thickness t is ...

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  2. When a man stands inside a shallow pond the depth of water at that pla...

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  3. If a completely transparent object has to be made totally invisible in...

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  4. Multiple images are formed in a thick mirror. Which image looks bright...

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  5. What is the critical angle of light when passing from water to air? (m...

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  6. For which colour of light is the critical angle between glass and air ...

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  7. For which colour of light is the critical angle between glass and air ...

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  8. What are the factors of light which are responsible for creating mirag...

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  9. In which direction do we have to look to see the setting sun if we are...

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  10. From sunrise to sunset, the sun subtends an angle of 180^(@) to our ey...

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  11. Critical angle of which pair of medium is lesser - air and water or ai...

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  12. Light passes through an optical fibre following which phyical phenomen...

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  13. If a ray of light moves from a medium to a medium, total internal re...

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  14. What is the approximate value of the refractive index of diamond?

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  15. What kind of image is formed in a desert by the formation of mirage?

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  16. Does critical angle depend on colour of light?

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  17. The angular altitude at which we see a star is not its actual angular ...

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  18. We see the sun a few minutes sunset or sunrise [Fill in the blank].

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  19. The sun appears to be elliptical during sunset. What is the reason beh...

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  20. Under what condition the angle of deviation of a refracted ray through...

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