Investigating Refraction Through Lenses

 Aim: 

To investigate how different types of lenses refract light.

Equipment:

 Triple-slit ray slide, power supply, a concave lens and the convex lens.

Method:

1. Set up the ray box, Triple-slit ray slide and  power supply

2. Place the convex lens in the space below. Place the ray box at the top of the page and shine the three rays of light at the tens. Make sure the central light of ray hits the lens at 90degrees as indicated in the diagram.

3. Carefully trace the direction of the incoming and refracted rays.

4. Repeat using the concave lens