Question

gives us an idea of how fast how slow light travels in a medium
a) angle of incidents
b) angle of reflection
c) thickness of light
d) refractive inext
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Answer 1

amswer is angle of reflections

Answer 2

Option “D” is the correct answer.

• Refractive index gives us an idea of how fast or how slow the light travels.

• The speed of light is signified by the medium (material) over which the light is traveling.  

• Light travels quicker in a vacuum than it does travel in any other medium.  

• Light deviates speed as it passes from one medium to another medium.

Hope it helped...