The physical barrier is the environmental ,natural condition and physical factors that act as a barrier in communication in sending a message from sender to receiver.
in the case of Raul (receiver)attending a workshop and having difficulty hearing the speaker(sender sending a message) because the people behind him are talking (physical barrier)
A physical barrier is any barrier to communication that is caused by a natural and/or environmental condition and affects how the communication when sending a message to a receiver. In this case, the noise from the people talking behind Raul acts as a environmental condition and is affected the way in which information from the speaker gets to Raul.
