• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2
3. 3
3
4. 4
4
5. 5
5

# The aim of this investigation was to find out the refractive index of light by shining light rays through a rectangular prism.

Extracts from this document...

Introduction

Light Refraction Investigation Introduction The aim of this investigation was to find out the refractive index of light by shining light rays through a rectangular prism. My hypothesis and prediction is that the refractive index obtained from this practical will be approximately 1.5, the textbook index of light through a glass. The refractive index will be given by dividing the sine of the angle of incidence divided by sine of the angle of refraction. In other words: . For this experiment, a sin r x sin i scatter graph will be plotted after gathering the necessary data, with the gradient of its trendline being the refractive index. The independent variables include the angle the light ray hits the medium at, while dependent variables are the angles of refraction. ...read more.

Middle

To control the position of the prism, we drew an outline of it with a pencil so that we could shift it back into its original position in case it moved (1). Then, a normal was drawn through the middle of the outline with a ruler (2). Afterwards, we began to introduce the light ray at an angle, but always touching the point where the normal met the medium (3). Now, we marked where the ray was before and after it went through with a pencil (4). Now the prism was removed so that we could draw the light ray positions with a ruler through the points (5). We now had a zigzagged line. The incident and refracted angles were measured with a protractor and recorded (6). ...read more.

Conclusion

Sources of error may include the protractor we used, as they might not have been precise enough. Also, the way we marked where the rays were at each refraction could have been erroneous, because the 'X' marks may not exactly mark where the centre of the ray was, so when we traced the overall line through them, the line could have shifted one degree less or more. Improvements can be made, such as simply increasing our concentration and precision while measuring the angles and marking the ray locations. Perhaps a more precise protractor could be used, if accessible. This investigation poses more questions, such as finding out the refractive indexes of light rays through a plethora of media, such as water, alcohol and lead. _________________ http://www.rpi.edu/dept/phys/Dept2/APPhys1/optics/optics/node4.html http://goto.glocalnet.net/ibweb/homepagelink.htm ?? ?? ?? ?? Asaki Tay, C10 1 ...read more.

The above preview is unformatted text

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

# Related International Baccalaureate Physics essays

1. ## Practical Investigation

Two weights are taken off and the amplitude is measured to 4cm and steps 4-5 are repeated. 9. The amplitude is measured to 6,8,10cm and steps 4-5 are repeated three times. 10. The length of the pendulum was shortened to 15cm and steps 3-5 are repeated 11.

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

1.269835024 Table 2: Incident angle, refracted angle, sin for the incident and refracted ray, and index of refraction for Tap Water( 36 �C) Incident angle (?i) Refracted angle (?R) sin (i sin(R Index of Refraction 20� 17� 0.342020143 0.292371704 1.169812734 40� 32� 0.642787609 0.529919264 1.212991588 60� 39� 0.866025403 0.629320391 1.376127988 Average Index of Refraction: Water temperature (�C)

1. ## The purpose of this experiment is to determine the refractive index of Perspex plastic. ...

for the angle of incident Average angle of refraction, Uncertainty for average angle of refraction Radian value Radian value Sin value Radian value Radian value Sin value 0.1745 0.17 0.02 0.02 0.1047 0.10 0.02 0.02 0.3491 0.34 0.02 0.02 0.1920 0.19 0.03 0.03 0.5236 0.50 0.02 0.02 0.2967 0.30 0.03

2. ## An experiment to find the Resistivity of Pencil leads in different degree of hardness

But, this will only happen when there is no voltage drop when passing through it as in the preliminary experiment it has shown that this is not possible in real life. Since pencil lead allows electricity to move through the circuit, but some of the electrical energy will be lost

1. ## Suspension Bridges. this extended essay is an investigation to study the variation in tension ...

= 0.3889 m From the values calculated above, we can infer that for a relatively non-elastic string the tension force is maximum further away from the rigid support and occurs somewhat halfway the distance (d/2 = 0.69 m) between the two supports.

2. ## Light Intensity Investigation

mark for all trials. * The same length of time each trial is conducted for (30 seconds). To keep this variable constant, we will use the clock on data studio to measure the time from the time we click the start button.

1. ## The Half-life of dice Decay investigation

0.40 0.21 9.5% 3 0.54 0.36 9.4% 4 0.71 0.53 9.3% 5 0.87 0.69 8.7% 6 1.0 0.87 7.7% 7 1.3 1.2 6.9% 8 1.6 1.5 4.8% 9 1.8 1.7 5.9% 10 2.0 1.8 6.7% 11 2.1 2.0 7.7% 12 2.4 2.2 10.0% 13 2.3 2.3 0.0% 14 2.4 2.4

2. ## Testing the Resistivity of Pencil Lead.

Pencil Lead Atmospheric Pressure Since the atmospheric pressure may affect the volume (radius) of the conductor, it may affect resistance. It is measured with barometer and kept constant because there is no change in medium where the experiment takes place.

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