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1.	Which of the following statements are true for a stationary wave?(a) Every particle has a fixed amplitude which is different from the amplitude of its nearest particle.(b) All the particles cross their mean position at the same time.(c) All the particles are oscillating with same amplitude.(d) There is no net transfer of energy across any plane.(e) There are some particles which are always at rest.
Answer» (a) Every particle has a fixed amplitude which is different from the amplitude of its nearest particle. (b) All the particles cross their mean position at the same time. (d) There is no net transfer of energy across any plane. (e) There are some particles which are always at rest.

Which of the following statements are true for a stationary wave?(a) Every particle has a fixed amplitude which is different from the amplitude of its nearest particle.(b) All the particles cross their mean position at the same time.(c) All the particles are oscillating with same amplitude.(d) There is no net transfer of energy across any plane.(e) There are some particles which are always at rest.

Answer»

(a) Every particle has a fixed amplitude which is different from the amplitude of its nearest particle.

(b) All the particles cross their mean position at the same time.

(d) There is no net transfer of energy across any plane.

(e) There are some particles which are always at rest.

Discussion

2.	Which of the following statements are true for wave motion?(a) Mechanical transverse waves can propagate through all mediums.(b) Longitudinal waves can propagate through solids only.(c) Mechanical transverse waves can propagate through solids only.(d) Longitudinal waves can propagate through vacuum.
Answer» (c) Mechanical transverse waves can propagate through solids only.

Discussion