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The refractive index of air w.r.t. med 1...

The refractive index of air w.r.t. med 1 is `6//7`.The refractive index of med 2 w.r.t air is `7//3`.Then ,the refractive index of med 1 w.r.t med 2 will be

A

`1//2`

B

`8//9`

C

`5//18`

D

`18//5`.

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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
  1. Light travels through a glass plate of thickness t and having a refrac...

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  2. If imuj represents refractive index,when a light ray goes from medium ...

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  3. The refractive index of air w.r.t. med 1 is 6//7.The refractive index ...

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  4. A microscope is focussed ona mark on a piece of paper then a slab of g...

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  5. A transparent cube of side 210 mm contains a small air bubble. Its app...

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  6. A ray of light travelling in a transparent medium of refractie index m...

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  7. Velocity of light in a liquid is 1.5 xx 10^8 ms^(-1) and in air,it is ...

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  8. Name the physical principle on which th eworking of potical fibres is ...

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  9. A plano-convex lens is made of refractive index 1.6.If the radius of c...

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  10. Focal length of a convex lens of refractive index 1.5 is 2 cm.Focal le...

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  11. A convex lens is dipped in a liquid,whose refrctive index is equal to ...

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  12. A lens is placed between a souce of light and a wall.It forms images o...

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  13. A boy is trying to start a fire by focussing sunlight on a piece of pa...

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  14. A bulb is located on a wll.Its image of equal size is to be obtained o...

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  15. A luminous object is placed at a distance of 30 cm from the convex len...

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  16. A lens having focal length f and aperture of diameter d//2 in the cent...

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  17. A plano-convex lens is made of a material of refrative index mu=1.5.Th...

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  18. The radius of curvatrure of a thin plano-convex lens is 10 cm (of cur...

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  19. A convex lens is dipped in a liquid,whose refrctive index is equal to ...

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  20. If a convex lens of focal length 80 cm and a concave lens of focal len...

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