Speed of Light | Physics

Speed of Light - 300,000,000 m/s

From Cape Reinga to Bluff - 0.006 seconds 

Formula

Time Taken = Distance/Speed of Light

Bouncing Light

Aim: To investigate how light behaves when it hits a plane (flat) mirror. 

Equipment:

1. Lightbox
2. Power Supply
3. Mirror

Method:

1. Collect a ray box power supply and single-slit ray slide from your teacher, and set them up to produce a single beam of light.
2. Place a plane mirror on the diagram of the protractor.
3. Vary the angle of incidence and record the angle of reflection.

Results:

Angle of Incidence	Angle of Reflection
0°	0°
10°	20°
20°	30°
30°	40°
40°	50°
50°	60°
60°	70°
70°	70°
80°	80°

1. Complete the following sentences using the word list below.

      reflection        light        reflected        normal        same        incidence

When light hits a mirror, the angle in which it hits the _____________ as the angle at which it is _________. Scientists called this the Refletion Law. In correct scientific terms, the Reflection Law states that the angle of ________ is equal to the angle of  __________ when measures from _______.