Find the Refractive Index of Glass a Using a Glass Block

Question 1

What do you do first? (Draw)

Answer 1

Draw around a rectangular glass block on a piece of paper and direct a ray of light through it at an angle

Question 2

What do you do second? (Trace)

Answer 2

Trace the incident and emergent rays, remove the block, then drawn in the refracted ray between them

Question 3

What do you do third? (Normal)

Answer 3

Draw in the normal at 90° To the edge of the block, at the point where the ray enters the block

Question 4

What do you do fourth? (Protractor)

Answer 4

Use a protractor to measure the angle of incidence and the angle o refraction (angles made with the normal)

Question 5

What do you do fifth? (Calculate)

Answer 5

Calculate the refractive index using Snell’s Law

Question 6

Look at diagram page 34

Answer 6

Ok