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A transparent cube of side 210 mm contai...

A transparent cube of side 210 mm contains a small air bubble. Its apparent distance, when viewed through one face of the cube is 100 mm and when viewed through the opposite face is 40 mm. What is the actual distance of the bubble from the second face and what is the refractive index of the material of the cube?

A

7 cm

B

7.5 cm

C

10.5 cm

D

4.67 cm.

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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
  1. The refractive index of air w.r.t. med 1 is 6//7.The refractive index ...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  19. A convex lens and a concave lens ,each having same focal length of 25 ...

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  20. Two thin lenses of focal length f1 and f2 are in contact and coaxial.T...

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