Question

The graph between angle of deviation (δ) and angle of incidence (i) for a triangular prism is represented by

• A.

  

• B.

  

• C.

  

• D.

  

Answer 1

The Correct Option is C

The graph between angle of deviation (δ) and angle of incidence (i) for a triangular prism is represented by Option C).

 

Real Life Applications

• Minimum deviation occurs when the angle of deviation is minimized due to the angle of the incident. For this phenomenon, the angle of incidence should be equal to the critical angle of the prism.
• A prism spectrometer helps in separating different wavelengths of light.
• Optical fibres help in transmitting light over long distance

All these use the phenomena of minimum deviation. 
 

Question can also be asked as

1. What is the minimum deviation?
2. How does the angle of deviation vary with the angle of incidence for a triangular prism?
3. What is the shape of the graph between the angle of deviation and the angle of incidence for a triangular prism?