• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Index of Refraction lab

Extracts from this document...

Introduction

Ankit Shahi                Jan 06 2009

Index of Refraction

The aim of the experiment is to find the index of refraction, n , of the plexiglass. This would be done by passing a ray of light at the plexiglass, at a certain angle, and then recording the angle at which it refracts back into the air. The angle incident to the plexiglass and the refracted angle would be measured by the graph paper that would be placed beneath the plexiglass.

When light enters a more optically dense medium, the ray bends toward the normal to the surface inside the medium. This is true for all angles greater than zero. However when the light enters a less optically dense medium, the refracted ray bends away from normal.

To find the index of refraction of plexiglass, n, the graph of the

...read more.

Middle

150

30

144

50

129

60

119

70

112

80

100

90

90

Calculating the sin of the incident angle and the refracted angle:

sin(10°) = 0.1736481777 = 0.17

Sin (173°) = 0.1218693434 = .12

The error of the sin of the angles is exempt

Table #2: Sin value of the incident angle and the refracted angle

...read more.

Conclusion

There were some weaknesses found in the lab. One weakness found was that that it was hard to keep the plexiglass at the same place. This could be solved by putting the plexiglass at a fix distance so that it won’t move. Another weakness was that the plexiglass had too many scratches and it was also dirty. This could have affected the results. This could be solved by either cleaning the lens with the lens cleaner or get a new glass.

...read more.

This student written piece of work is one of many that can be found in our International Baccalaureate Physics section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Physics essays

  1. Investigating How The Index Of Refraction Is Affected By Different Temperatures Of Water

    The ray should pass through the Plexiglas with the hot water, and then be refracted on to the other side of the protractor ( it should be easier to read the refracted angle by placing a paper where you seem to see the refracted angle for a more accurate result).

  2. The Refraction of Light Lab

    More specifically, since in our experiment we are dealing with specifically water as our medium, I believe that we should be able to obtain the refractive index for water, which is 1.333. On the left is a table of common refractive indices.

  1. Design Lab, Charge on Balloons

    * 1 Weighing scale (�0.1g) o The weighing scale will be used to measure the mass of water dispersed by the balloon so that the volume of the balloon can be determined (as stated by Archimedes principle) * 1 Electroscope o The Electroscope will be used to measure the charge on the balloon using conduction.

  2. Incandescent 100 watt light bulb ban: A bright Idea ?

    Because it contains mercury CFL bulb's can not just be dumped in the bin. You need to take them to a special waste dump where they will be handled accordingly. The consumer needs to know this otherwise, the mercury can be mixed with our normal waste dump and many consequences could follow.

  1. Pendulum Lab

    Time measurement device- To increase the accuracy and diminish the significance of human error in counting, a stopwatch was used to keep track of the duration of the pendulum's period.

  2. HL Physics Revision Notes

    Linear magnification ? The ratio between the size (height) of the image and the size (height) of the object. It has no units Linear magnification = image size/object size Define the power of a convex lens and the dioptre The power is the reciprocal of the focal length.

  1. Light Intensity Investigation

    Independent Variable Control Variable Control Variable Control Variable Dependent Variable Distance Between Sensor and Light- (CM) Time Allocated for Measuring of Data Per Trial-Sample Size (Sec) No. Of Valid Trials (excluding 1 pre-test) Light Source Power (Volts) 10 60 3 12 Average Lux Illuminated =T1+T2+T3 3 20 60 3 12

  2. In this experiment, a mechanism is prepared to observe the refraction of light and ...

    Because, when two or three dimensional wave travelling in one medium crosses a boundary into another medium, the transmitted wave may move in a different direction than the incident wave as shown in the figure below. This phenomenon is known as refraction.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work