A) \[{{\beta }_{AIR}}>{{\beta }_{WATER}}\]
B) \[{{\beta }_{WATER}}>{{\beta }_{AIR}}\]
C) \[{{\beta }_{AIR}}={{\beta }_{WATER}}\]
D) \[{{\beta }_{WATER}}=0\]
Correct Answer: A
Solution :
| Option [a] is correct |
| Explanation: \[\beta \propto \lambda \] and \[\lambda \propto 1\,/\,\mu \] |
| So, \[\beta \propto 1\,/\,\mu \] |
| Since \[{{\mu }_{WATER}}>{{\mu }_{AIR}}\] |
| \[\therefore \] \[{{\beta }_{AIR}}>{{\beta }_{WATER}}\] |
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