Question
Question: A string is tied at two rigid support. A pulse is generated on the string as shown in figure. Minimu...
A string is tied at two rigid support. A pulse is generated on the string as shown in figure. Minimum time after which string will regain its shape : (Neglect the time during reflection)
A
2 sec
B
4 sec
C
6 sec
D
None of these
Answer
6 sec
Explanation
Solution
At ‘B’ shape of pulse gets inverted. The pulse will become erect after reflection at ‘A’.