Q3 of 61 Page 65

What do you conclude about the speed of light in a diamond if you are told that the refractive index of diamond is 2.41?

As we all know that



We also know that


Speed of light in a vacuum is = 3 × 108 ms-1


So,



Speed of light in diamond =1.244×108m/s


More from this chapter

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5

The speed of light in water is 2.25 × 108 ms-1. If the speed of light in vacuum is 3 × 108 ms-1, calculate the refractive index of water.

 1

Cross word puzzle


Across


2. Optical illusion due to refraction


4. A type of mirror that diverge the light rays


6. The nature of image formed when object is near the pole of concave mirror


7. Electromagnetic radiation visible to us


Down


1. The light ray sent back from a surface into the same medium


3. When magnification is negative, the nature of the image is ________


5. For concave mirror u and f are always __________


 1

Light ray emerges from water into air. Draw a ray diagram indicating the change in its path in water.

 2

When a ray of light passes from air into glass, is the angle of refraction greater than or less than the angle of incidence?