An Experiment to Verify Snell's Law & Hence Measure the Refractive index of Glass/perspects

Step 1 (An Experiment to Verify Snell's Law & Hence Measure the Refractive index of Glass/perspects in Sketchbook)

Place a glass block on an A4 sheet of paper with two pins at an angle to the block and outline the block

Step 2 (An Experiment to Verify Snell's Law & Hence Measure the Refractive index of Glass/perspects in Sketchbook)

Place two more pins on the other side of the block so that they seem to be in line with the first two pins when viewed through the block

Step 3 (An Experiment to Verify Snell's Law & Hence Measure the Refractive index of Glass/perspects in Sketchbook)

Remove the block and the pins and draw the three rays and normal as shown

Step 4 (An Experiment to Verify Snell's Law & Hence Measure the Refractive index of Glass/perspects in Sketchbook)

Measure i and r

Step 5 (An Experiment to Verify Snell's Law & Hence Measure the Refractive index of Glass/perspects in Sketchbook)

Repeat steps 1-4 five more times

Step 6 (An Experiment to Verify Snell's Law & Hence Measure the Refractive index of Glass/perspects in Sketchbook)

Complete the table and plot the graph of Sin (i) verses Sin (r)

Step 7 (An Experiment to Verify Snell's Law & Hence Measure the Refractive index of Glass/perspects in Sketchbook)

Find the slope of the graph

What sort of graph should you get from the Snell's law verification?

straight line graph

Why do you get a straight line from the graph?

because according to Snell's law they are directly proportional

Draw the Apparatus for An Experiment to Verify Snell's Law & Hence Measure the Refractive index of Glass/perspects in Sketchbook

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