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A ray of light falls normally on a glass...

A ray of light falls normally on a glass slab. Draw a diagram showing the path of the ray till it emerges out of the slab. What is the angle of incidence and angle of refraction at each surface of slab ?

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### Step-by-Step Solution: 1. **Understanding the Situation**: A ray of light is incident normally on a glass slab. "Normally" means that the ray strikes the surface at a right angle (90 degrees) to the surface. 2. **Drawing the Diagram**: - Draw a horizontal line to represent the glass slab. - Draw a vertical line (perpendicular) to the slab to represent the normal line. - Draw the incident ray coming from above and striking the glass slab at the normal line. ...
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