Question

Out of the following which statement is correct?
A. A pulse is of long duration
B. A pulse is a short and sudden disturbance
C. Clapping of hands once produces a wave
D. A pulse transports mass from one place to another

Answer 1

Hint:In this problem if we see the option it is talking about the pulse and here the pulse is specifically about sound pulse. Sound pulse is analogically similar to that of the impulse in force, that is when a sudden force is applied to an object then it will change the direction of the object.

Complete answer:
Pulse is generally defined as a generic term which describes a single disturbance that moves through a transmission medium and this medium may be vacuum or matter and may be indefinitely large or finit.

As per the given option we come to know that the solution is all about the pulse and here the pulse specifies the sound pulse and the sound pulse is analogically similar to that of impulse produced in a body due to an applied force. Similarly in sound pulse when there is sudden change in the wave for a short duration of time.

Therefore, option (B) is correct.

Note:Remember that a pulse wave is a sudden disturbance in which only one wave or a few waves are generated and it gives back and forth motion which creates disturbance. Some of the examples of pulse waves are thunder and explosions. Note that don't get confused in option (D) as the pulse of a wave only transports energy, not matter or mass, from one place to another.