Refraction of light through a glass slab activity Class 10
To understand the refraction of light through a glass slab, follow these steps:

Materials required:
- Glass slab
- Drawing board
- Pins
- Sheet of white paper
- Protractor
- Pencil

Procedure:
1. Place the glass slab on the drawing board.
2. Secure the glass slab in place using pins.
3. Place a sheet of white paper under the glass slab.
4. Draw a normal line perpendicular to the glass slab on the paper.
5. Shine a ray of light from a source such as a torch or laser pen onto the glass slab.
6. Observe and mark the incident ray, refracted ray, and emergent ray on the paper.
7. Measure and record the angles of incidence and refraction using a protractor.
8. Repeat the experiment with different angles of incidence.

Observations:
- The incident ray bends towards the normal as it enters the glass slab.
- The refracted ray bends away from the normal as it exits the glass slab.
- The emergent ray is parallel to the incident ray.

Conclusion:
- The experiment demonstrates the refraction of light through a glass slab.
- It shows how light changes direction when passing from one medium to another due to the change in speed.
By following this activity, students can visually observe and understand the phenomenon of refraction of light through a glass slab.