Physics
(a) With the help of a suitable diagram, represent the refraction of light rays from
I. rarer to denser medium
II. denser to rarer medium.
(b) Does the depth of a tank of water appear to change or remains the same when viewed normally from the above?
Refraction Plane Surfaces
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Answer
(a)
I. The below ray diagram shows the refraction of light from rarer (air) to denser (glass) medium:
II. The below ray diagram shows the refraction of light from denser (glass) to rarer (air) medium:
(b) When a tank is viewed normally from above, the apparent depth of the tank will remain the same as the incident light striking normally on the surface will pass undeviated. Hence, no phenomenon of refraction is observed and depth of pond appears same.
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