Question

Standing wave can be produced

I) when two identical waves with a phase difference are moving in the same direction

II) when two identical waves with a phase diff. are moving in opposite direction

III) When two identical waves with phase diff zero are moving in the opposite direction

IV) when two identical waves with phase difference zero are moving in the same direction

Choose the correct option​

Answer 1

A standing wave is produced When two identical waves with a phase difference are moving in the same direction.

Option (2) is correct.

Explanation:

• A standing wave is produced When two identical waves with a phase difference are moving in the same direction.
• A standing wave is a wave that travels in time but the amplitude of this wave does not oscillate in space.
• The oscillation of waves takes pale at different points.
• The points with a minimum value of amplitude are called nodes and those with maximum amplitude value are called antinodes.