TEST 10 (X-REFRACTION OF LIGHT AT PLANE SURFACES)
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NAME : *
1.The basic cause of refraction is? *
1 point
2. The refractive index of glass with respect to air is 2. Then the critical angle of glass-air interface is *
1 point
3, Total internal reflection takes place when the light ray travels from *
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4. .........is used for visual examination of in accessible regions in the human body. *
1 point
5. The unit of refractive index is *
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6. Which one of the following is not an application of total internal reflection? *
1 point
7.If speed of light were same in all the media, which of these processes is not possible? *
1 point
8. At critical angle of incidence, the angle of refraction is *
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9. A coin is placed at a depth of 4cm in water. When seen from air it appears to be at adepth of ( n   = 4 /3) . Find the answer? *
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10. In medium water to air, rays of light *
1 point
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