6. The distance between node and adjacent antinode is 30 cm. The wavelength is A.30 cm. B.90 cm. C.120 cm. D.60 cm.
Option D Solution: Keeping in view that; the distance between node and adjacent antinode is 30 cm. The wavelength is 60cm. A node is a point on a standing wave where the amplitude is minimum while antinode is the point of maximum displacement.
