Physics
A ray of light is incident normally on the face of an equilateral glass prism. The angle of refraction from the first face of prism is :
- 45°
- 90°
- 60°
- 0°
Refraction Plane Surfaces
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Answer
0°
Reason — When a ray of light is incident normally (perpendicularly) on a surface, it means the angle of incidence is 0°.
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Related Questions
In position of minimum deviation, the refracted ray inside the prism is …………… to its base:
- normal
- inclined at 45°
- parallel
- none of the above
Mention the incorrect statement:
- The angle of deviation produced by a prism depends on the colour or wavelength of the light used.
- The angle of incidence also affects the angle of deviation produced by the prism.
- In a prism as well as a parallel sided glass slab the emergent ray is parallel to the incident ray with a lateral displacement.
- The angle of deviation of prism is also affected by the material of the prism.
Complete the following sentence:
Angle of deviation is the angle which the …………… ray makes with the direction of …………… ray.
State whether the following statement is 'true' or 'false'.
The deviation produced by a prism is independent of the angle of incidence and is same for all the colours of light.