Please answer q 25

​Q25. Why do we prefer a longer string / slinky while performing the experiment to determine the speed of a pulse generated by it? Write one more precaution to be taken during this experiment.


Dear Student

The speed of the pulse generated in the stretched string/slinky is very high. So, it is difficult to measure the time taken by the pulse in a single journey along the known small length of string. Therefore, it is preferred to take a longer string to perform the experiment.

Another precaution is 
One end of the string/slinky should be fixed properly with the rigid support.


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