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A ray of light travelling in a transpare...

A ray of light travelling in a transparent medium of refractie index `mu` falls on a surface separatign the medium from air at an angle of incidence of `45^@`.For which of the following velues of `mu`,the ray can indergo total internal reflection?

A

`mu=1.25`

B

`mu=1.33`

C

`mu=1.40`

D

`mu=1.50`.

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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
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  2. A transparent cube of side 210 mm contains a small air bubble. Its app...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  20. A beam of light composed of red and greeen ray is incident obliquely a...

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