## Question

A travelling wave pulse is given by

In which direction and with what velocity is the pulse propagating? What is the amplitude of pulse?

### Solution

*A* = 2

A wave pulse is a disturbance localised only in a small part of space at a given instant [as shown in fig.]

and its shape does not change during propagation. Though a pulse can be represented by exponential or trigonometrical functions also, it is usually expressed by the form

Comparing the above with the given pulse we find that

i.e., the pulse is travelling along negative *x*-axis with velocity 2 m/s.

Further amplitude is the maximum value of wave function which will be when

#### SIMILAR QUESTIONS

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