Angle of Deviation in a Glass Triangular Prism Experiment

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In a triangular glass prism experiment, the angle of deviation can theoretically be zero under specific conditions, such as when light enters and exits the prism at certain angles. However, this is not applicable to a triangular prism with an angle of 60 degrees, as the geometry inherently causes deviation. The discussion also references rectangular prisms to illustrate that the conditions for zero deviation differ between prism types. The focus remains on understanding how light behaves as it passes through a triangular prism. Overall, the angle of deviation is influenced by the prism's geometry and the angle of incidence.
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In an experiment to trace the path of a ray of light through triangular glass prism.
Can the angle of deviation be zero? Why?
 
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What do you think?
The answer for a rectangular prism would be yes.

PS: I assume that we can discount shining the beam down the length of the prism.
 
CWatters said:
What do you think?
The answer for a rectangular prism would be yes.

PS: I assume that we can discount shining the beam down the length of the prism.

Not a rectangular prism , a triangular prism with angle of prism = 60degrees .
 
Yes I know you asked about a triangular prism. My reference to a rectangular prism was a hint.
 
Thread 'Correct statement about size of wire to produce larger extension'

Thread 'Correct statement about size of wire to produce larger extension'

The answer is (B) but I don't really understand why. Based on formula of Young Modulus: $$x=\frac{FL}{AE}$$ The second wire made of the same material so it means they have same Young Modulus. Larger extension means larger value of ##x## so to get larger value of ##x## we can increase ##F## and ##L## and decrease ##A## I am not sure whether there is change in ##F## for first and second wire so I will just assume ##F## does not change. It leaves (B) and (C) as possible options so why is (C)...
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