Download Physics PROJECT class 12th. PDF

TitlePhysics PROJECT class 12th.
TagsPrism Refraction Refractive Index Optics Natural Philosophy
File Size983.2 KB
Total Pages21
Document Text Contents
Page 20


10. By proceeding as in step 3-8, determine the value of the

angle of deviation when the angle of deviation is 35°,


11. Record the observations in tabular form.

12. Plot a graph between the angle of incidence i(along X

axis) and angle of deviation δ(along Y axis). The graph

obtained will be as shown in figure.

13. Note the value of angle of minimum deviation (δm ) from

the graph corresponding to the lowest point i-δ curve as

shown in figure.


The graph between i and δ shows that as the angle of

incidence increases, the angle of deviation first

decreases, attains a minimum value and then on

increasing the angle of incidence further, the angle of

deviation increases.

 The angle of minimum deviation, δm=____ (water)

 The refractive index of the material of the prism,

µ = ____


 The boundary of the prism, incident ray and

emergent ray should be drawn with a sharp


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