Q: 84 (NDA-II/2008)

Consider the following statements : The principle of total internal reflection is applicable to explain the :
1. formation of mirage in desert.
2. formation of image in microscope.
3. colour of evening sky.
4. operation of optical fibers.
Which of the statements given above are correct?
stats: 
0,352,144,352,104,16,24

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