In progressive waves, the amplitude may be constant and neighboring points are out of phase with each other

In air or other gases, a progressive anti node occurs at a displacement node and a progressive node occurs at a displacement anti node

Longitudinal wave can be polarized while transverse wave cannot be polarized

Transverse wave can be polarized while longitudinal wave cannot be polarized

Bihar

Rajasthan

Uttar Pradesh

Madhya Pradesh

Sri Lanka

Myanmar

Maldives

Lakshadweep

Block mountain

Fold mountain

Rift valley

Volcanic plateau

I, II, III

II, III, IV

III, IV, V

I, III, V