science
Grade-7
Easy
Question
During normal incidence, the angle of incidence ___ the angle of refraction.
- >
- <
- =
- None of the above
Hint:
Angle of incidence= angle of refraction, when incident normally to the surface.
The correct answer is: =
- The ray which is incident normally(90° to the surface) on the interface between the two different medium, goes undeviated from one medium to other and there is no refraction.
- Therefore, refracted ray will also be at 90° from the surface.
- So, the correct option is c.
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