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

refractive index prac report

Extracts from this document...

Introduction

Refractive Index Prac Report

Aim: To find the refractive index of the Perspex block

Hypothesis: The refractive index of the Perspex block should be grater than the refractive index of Air.

Introduction: Snell’s law states that the refractive index of a substance multiplied by Sin of the angle or incidence should be equal to the refractive index of another substance multiplied by Sin of the angle of refraction.

The mathematical equation that describes this relationship is:

Independent Variable: changing the angle of incidence ( 0)

Dependant Variable: The angle of refraction

Constant: The distance the light ray

...read more.

Middle

50

27.5

55

29.5

60

33.5

65

35.5

70

36.5

75

37

80

37.5

85

38

It can be seen that from the table, the light ray is bent towards the normal because the angle of incidence is greater than the refracted angle thus stating that the Perspex block is of a greater density than air. The graph above shows the angle used against the refracted angle. From the

...read more.

Conclusion

Conclusion: It can be seen that from the results, as the beam of light enters from air into the Perspex block the beam is bent towards the normal. This means that the Perspex block is denser than air

By Matt Bauer 11.4

...read more.

This student written piece of work is one of many that can be found in our GCSE Waves 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 GCSE Waves essays

  1. Marked by a teacher

    Find the critical angle and refractive index for plastic using a graphical treatment for ...

    4 star(s)

    Fit the slit on the ray box allowing only a small ray of light through. 6. Then turn on the PSU. 7. Then shine the light on the interval and make sure it comes out of the centre of the straight side.

  2. Marked by a teacher

    Investigation:To find the refractive index of cooking oil.

    4 star(s)

    hold the substances, must have be used throughout the whole experiment because other trays which look the same may have a varied density. This would ultimately mean that the angle of refraction would be different to the expected result. This is because the light would spend longer travelling through the plastic of the tray before reaching the liquid inside.

  1. Peer reviewed

    Graphs illustrating variants of y = sin x.

    5 star(s)

    When B>1(graph 6) there is horizontal compression, but when B<1 there is horizontal expansion (graph 7). This is opposite to what we saw when we were exploring the graphs of y = Asin x.

  2. The aim of my experiment is to see what factors affect electromagnetism the most ...

    an electron has a magnetic field around it and so as a result as the current increases so does the magnetic field. This magnetic field is then concentrated within an iron core (the iron nail) to create the electromagnet and the electromagnet gets stronger with the increasing electrons.

  1. Investigating the factors which affect the sideways displacement of a light ray through a ...

    a definite conclusion that: The sideways displacement of a light ray through a glass block increases proportionally but more rapidly as the angle of incidence increases. Especially because of the very good agreement with my predicted results (as can be seen from graph.)

  2. Find a relationship between the angles of incidence and the angles of refraction by ...

    the refracted angle increases beyond 90 degrees, the refracted ray is reflected back into the perspex, into the same plane as the incident angle. This phenomenon is called total internal reflection. This too can be calculated using Snell's law by setting the refraction angle equal to 90�.

  1. Refractrometry. Aim: Using a model Pulfrich refractometer determine the refractive index of a range ...

    Method 1. Place a clean sheet of paper on top of the pin board, and then the Perspex block on top. 2. Draw accurately around the block and put a mark at half way down the long side of the block.

  2. Carry out an experiment to find a relationship between the incident angle and the ...

    Then, when I connect the lines on the drawing I can measure the angle of refraction with the protractor. Diagram showing the experiment Prediction When the light enters the Perspex block it will bend towards the normal. When the light exits the Perspex block it will return to its original angle.

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