• 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)

    I will take this range as I predict that in-between 400 - 450 will be the critical angle.

  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. Deviation of Light by a Prism.

    So the variables that I will keep the same are the prism, and the protractor, changing the lab pack and the ray box will have no effect on my results whatsoever as the light is only used as a guide for the lines of incidence and emergence to be drawn.

  2. SIGNAL ANALYSIS

    A Bode plot has output Gain(dB) against Angular Frequency(?). Both of these quantities can be obtained from the following formulas. Gain dB = 20 log (Voltage Out / Voltage In) Angular Frequency (?) = 2?f or Where: f = Frequency (Hz)

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

    As the number of amps increase the magnetism should also increase and it's the same for the coils. Although I cannot predict which variable will create the most efficient electromagnet, as I do not know how the electron output would vary from each variable, I can though predict that because

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

    * A power pack. * A protractor. * A ruler. * A pen or pencil. * A sheet of paper. Method Firstly, I will draw around the Perspex block; this enables me to draw in the normal. I will also include the angles that I want to test, using the protractor.

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

    Only the incidence ray may change. Accuracy: I must use a sharp pencil to be more precise, mm ruler to work in millimetres for more precision, large-scale protractor in order to achieve grater accuracy. I must also use a ray box producing a narrow ray. The light ray may be wide.

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