• 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...


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.


















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: 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)

    I therefore predict that the refractive index of cooking oil will be approximately 1.40. DEPENDENT VARIABLE (things to be kept the same) In order to make this investigation a fair test, several pointers must be followed throughout the experiment. These are: * The plastic tray, which is being used to

  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 ...

    By comparing the two bar charts against each other I can see that increasing the current is the most efficient way to make the electromagnet better. This is because the bar charts compare the variable in question against the mass of paperclips the electromagnet can pick up in any one test.


    The playback from an old record contains a lot of scratches and pops due to both the production and recording of the original material and also the very nature by which it is reproduced during playback. These undesired sounds occur in the frequency spectrum above the 10kHz-frequency range.

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

    Hence, the gradient cannot be calculated. This proves that Snell's law is correct. Lastly, using Snell's law, it can be determined that when the angle of incident is zero degrees, the angle of refraction will also be zero degrees. However, as the incident angle increases beyond the critical angle and

  1. Deviation of Light by a Prism.

    In involves using the angle that is in the middle of the first refracted array and the second refracted ray. This angle will always be 120� because it will always be double the angle at the top of the prism (from geometry).

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

    explanation: When the angle of incidence is 0, there is no sideways displacement (as shown in diagram). As I increase, d must also increase. We can calculate the sideways displacement: I am going to calculate the sideways displacement for i=30 degrees: 1.

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