6- True or False answers TIF 1. Total Internal reflection occurs when refraction

Question

6- True or False answers TIF 1. Total Internal reflection occurs when refraction angle>90 2. light refracts towards the normal if it travels from low to high density 3 Light can travel in vacuum at 186,000 Miles/sec 4. Virtual image occurs when light rays physically meet 5. Real image can be seen on the screen 6. Light refracts through glass and leave back to air in parallel path to its original direction 7. Conductance field UOM is Farad. 8. Convex mirror is used in some cars for a wider viewing angle 9. If the object is very far, all light passes through a lens the at the focal point 10. Light behaves as a packet of energy that travels in waves 11. Laser is light intensity amplification by stimulating emission of radiation (i.e. exploiting the electron thru stimulation it and returning to its original position causing the release of additional photons in the process) 12. Primary Colors are RGB and complimentary colors are Y.C&M; 13. it Space is dark because there is no light that comes through 14. Destructive interference occurs when light waves cancel each other after going through 2 slits 15. The light spectrum colors have same wave length and speed 16. Light as energy is measured by multiplying Planck's constant H and frequency

Explanation / Answer

1. True, Total internal reflection occurs when angle of refraction greater than 90.

2.true, light bends towards the normal when it travel from rarer to denser medium.

3. True, this is speed of light in vacuum

4.false, when light ray physically meets, they forms real image.

5.true. Real image can be traced on screen.

6.true, the emergent ray makes equal angle as the incident ray making with the normal.

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