A narrow sound pulse (for example, a short pip by a whistle) is sent across a medium. (a) Does the pulse have a definite (i) wavelength, (ii) frequency, (iii) speed of propagation ? (b) If the pulse rate is `1` after every `20 s`, (i.e. the whistle is blown for a split second after every `20 s`) is the frequency of the note produced by the whistle equal to `(1)/(20) = 0.05 Hz` ?

Explanation

**Step-by-Step Solution:**

**Part (a):**

1. **Understanding a Sound Pulse:**
- A sound pulse, like a short whistle sound, is a brief disturbance that travels through a medium. It can be thought of as a very short wave.

2. **Defining Wavelength:**
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