Node formation stage

Seedling stage

Grain formation stage

Before maturity stage

Kolkata

Chennai

Mumbai

Coimbatore

Saudi Arabia, U.S.(A) and Russia

U.S.(A), Saudi Arabia and Iran

Saudi Arabia, U.S.(A) and Iran

U.S.(A), Saudi Arabia and Mexico

Sodium nitrate

Urea

Ammonium chloride

None of these

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