UGC NET Questions (Paper – 1)

Noise is defined as any unwanted interference that distorts or obscures the message as it travels through the channel. Loud corridor chatter,traffic or construction sounds can cover parts of the teacher's voice,making the lecture hard to follow. The stem clearly refers to such disturbances,so noise is the correct completion.

Option A:
Feedback is purposeful information about understanding and usually helps improve communication,so it is quite different from unwanted disturbance.

Option B:
Channel is the medium that carries the message,such as air or a sound system,and is not itself the disturbance. A channel may be affected by noise,but the two concepts are distinct.

Option C:
Message denotes the content being taught,not the interfering sounds that disrupt it,so it cannot fill the blank.

Option D:
In communication theory,noise can be physical,psychological or semantic,but in this case it is physical noise affecting hearing. Recognising noise helps communicators take steps like closing windows or using microphones to reduce its impact. This explanation fits Option D exactly.