Physics
(a) A stick partly immersed in water appears to be bent. Draw a ray diagram to show the bending of the stick when placed in water and viewed obliquely from above. On which phenomenon, it is based?
(b) Two parallel rays of orange and green light in air, meet an air-water interface as shown below
I. Complete the diagram for path inside water.
II. What conclusion will you draw for this?
Refraction Plane Surfaces
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Answer
(a) Ray diagram showing bending of the stick when placed in water and viewed obliquely from above is given below:
The apparent bending of the stick is due to the refraction of light when it passes from water into air.
(b)
I. The complete path of the rays is shown in the below diagram:
II. The two refracted rays are not parallel in glass as orange light with faster speed bends less while green light with slower speed bends more.
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