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When light is incident from air on a rec...

When light is incident from air on a rectangular glass slab and then the angle of incidence willl be:

A

`0^(@)`

B

`45^(@)`

C

`90^(@)`

D

depends on the refractive index of glass

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The correct Answer is:
To solve the question regarding the angle of incidence when light is incident from air on a rectangular glass slab, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding the Setup**: - We have a rectangular glass slab and light is incident on it from air. - The angle of incidence is defined as the angle between the incident ray and the normal to the surface at the point of incidence. 2. **Drawing the Diagram**: - Draw a rectangular glass slab. - Indicate the direction of the incoming light ray from air towards the glass slab. - Draw a normal line (perpendicular) to the surface of the glass slab at the point where the light ray strikes. 3. **Identifying the Angle of Incidence**: - The angle of incidence (denoted as \( i \)) is the angle between the incident ray and the normal line. - If the light ray is striking the glass slab perpendicularly (i.e., it is coming straight down towards the glass), the angle between the incident ray and the normal will be 0 degrees. 4. **Conclusion**: - Therefore, if the light is incident perpendicularly on the rectangular glass slab, the angle of incidence is 0 degrees. 5. **Final Answer**: - The angle of incidence when light is incident from air on a rectangular glass slab is **0 degrees**.
To solve the question regarding the angle of incidence when light is incident from air on a rectangular glass slab, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding the Setup**: - We have a rectangular glass slab and light is incident on it from air. - The angle of incidence is defined as the angle between the incident ray and the normal to the surface at the point of incidence. ...
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