what do i need to know all about optics physics IB SL? got test tomorrow?

Answer 1

You should know that you should study before the last day.

Light travels at 186 thousand miles per hour or 300 million meters per hour. Those are the same speed just measured with a different unit of distance.

Light has properties like a particle and like a wave. This was very hard for scientists to understand before the early 1900's.

The angle of incidence is equal to the angle of reflection.

The refractive index determines how much a light ray bends when transitioning between two materials like air and water or air and glass.

Good luck.