20 waves pass through a point in a medium, in 5 seconds. What is the time required for one wave to pass?
Correct answer: A. 1/4 sec
- A. 1/4 sec
- B. 4 sec
- C. 1/2 sec
- D. 2 sec
Explanation
The following is the solution:If it takes 5 seconds for 20 waves to passthen the time taken for one wave to pass will be xUsing simple ratio method:5 : 20x : 120x=5x=5/20x=1/4
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