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A ray of light from a sodium lamp underg...

A ray of light from a sodium lamp undergoes total internal reflection.The critical angle will be smallest,when it travels from

A

water to glass

B

glass to air

C

glass to water

D

water to air.

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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
  1. A person swimming at the bottom of a swimming pool lookds up to the di...

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  2. Total interval reflection takes place, when light travels from

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  3. A ray of light from a sodium lamp undergoes total internal reflection....

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  4. A ray of light falls on a right angled prism ABC (AB=BC) and travels a...

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  5. For the given incident ray as shown in the figrue,the condition of tot...

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  6. The critical angle of light passing from glass to air is minimum for

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  7. Which of the following phenomenon is used in optical fiber?

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  8. A glass prism of refractive index 1.5 is immersed in water (mu= 4//3)....

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  9. A,B and C in the diagram represent rays of light incident upon a face ...

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  10. Refractive index of water is 5//3. A light source is placed in water a...

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  11. A fish looking up through the water sees the outside world contained i...

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  12. A diver in swimming pool wants to signal his distress to a person lyin...

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  13. An equiconvex lens has focal length equal to the radius of curvautre.I...

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  14. What is the focal length of a double convex lens for which radius of c...

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  15. A lens behaves as a converging lens in air and diverging lens in wate...

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  16. The two surfaces of a convex lens are of same radius of curvature.It i...

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  17. The two surfaces of a convex lens are of same radius of curvature.It i...

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  18. A convex lens is placed in contact with a mirror as shown in figure. I...

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  19. For a given distance between an object and an image screen,magnificati...

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  20. An object is placed at a distance of f//2 from a convex lens .The imag...

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