Question

Which of the following statements is/are correct about waves ?
I. Waves are patterns of disturbance which move without the actual physical transfer of flow of matter as a whole.
II. Waves cannot transport energy.
III. The pattern of disturbance in the form of waves carry information that propagate from one point to another.
IV. All our communications essentially depend on transmission of signals through waves.

• A. I and III
• B. Only IV
• C. I, II and III
• D. I, III and IV

Answer 1

Answer: (D)

Waves are kind of disturbances which moves from one place to another without the actual physical transfer of matter of the medium as a whole. The particles of the medium only oscillate but do not travel from one place to another.
Waves transport energy and the pattern of disturbance has information that propagate from one point to another. Here, wave pattern propagates.
All our communication essentially depend on transmission of signals through the waves.