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REFRACTIVE INDEXOF DIFFRENT
LIQUIDS USINGHOLLOW PRISM
MADE BY -: Piyushh Bhutoria CLA
SS -: XII BO
ARD ROLL NO. -:
CERTIFICATEThis is to certify that PIYUSHH BHUTORIA of class XII-A has
completed the physics project entitled “TO FIND THE REFRACTIVE
INDEX OF DIFFERENT LIQUIDS USING HOLLOW PRISM” under the guidance of her physics teacher Mrs and lab
assistant MrThe progress of the project has been continuously reported and has been
acknowledged consistently.
(Physics Teacher)
ACKNOWLEDGEMEnTI would like to owe the sense of gratitude to our physics teacher Mrs. for her consistent guidance, support and encouragement without which this project would not able to exist in present shape.
I would also like to thank our Lab assistant Mr., my parents for their blessings and my friends for their help in order to complete the project.
Aim
Apparatus Required
Theory
Procedure
Observation & Calculation
Conclusion
Precautions
Bibliography
CONTENTS
AIMAIM
To findrefractive index of
different liquids usinghollow prism.
THEORYPRISM : A prism is a transparent optical element with flat, polished surfaces that refract light. Prisms can be made from any material that is transparent including glass, plastic and fluorite.A prism can be used to break light up into its constituent spectral colors. Prisms can also be used to reflect light, or to split light into components with different polarizations.
REFRACTION:
The refractive index of the liquid Is given by the formula:
Where: = refractive index of the liquid = the angle of minimum deviationr = angle of refractioni = angle of incidenceA = angle of prism
PROCEDURE Fix a white sheet of paper on
the drawing board with help of drawing pins.
FLUIDS REFRACTIVE INDEX
Water 1.33Glycerine 1.47
Ethyl Alcohol 1.36Vegetable Oil 1.45
Acetone 1.36HCl 1.34
Keep the prism and mark the outline of it as ABC.
Drop a normal PQ on the side AB.
Draw the angle of incidence in accordance with the normal PQ and place 2 pins so that they appear to be in the straight line.
Place the prism filled with given sample of liquid ,on the marked outline ABC.
Now take the pins and place them on the side AC so that all the 4 pins appears to be in same line.
Remove the prism and draw the line joining the points so obtained.
Mark the diagram as shown in the figure.
Repeat this with different liquids and different angle of incidence.
HCl
S.No.
i e d A
1. 35 48 24 60
2. 40 52 30 60
3. 45 42 25 60
4. 50 36 26 60
5. 55 32 28 60
Ethyl alcohol
S.No.
i e d A
1. 35 52 26 60
2. 40 44 25 60
3. 45 41 25 60
4. 50 36 26 60
5. 55 32 27 60
CALCULATIONS
CALCULATION GRAPH HCL ethyl alcohol
RESULT
THE REFRACTIVE INDEX OF ETHYL ALCOHOL
EXPERIMENTAL-1.36 CALCULATED- 1.34
THE REFRACTIVE INDEX OF HCL EXPERIMENTAL- 1.34 CALCULATED- 1.34
PRECAUTIONS
Angle of incidence should lie b/w 35-60 degree.
Pins should be vertically fixed and should lie in same line.
Distance b/w two points should not be less than 10mm.
Same angle of prism should be used for all observation.
Arrow head should be marked to represent emergent and incident ray.
BIBLIOGRAPHY wikipedia.org
google.com
physicsforlife.com {physicsforlife.com}
earthphysics.com