The ‘National Trade Facilitation Action Plan’ has been formulated for implementation of World Trade Organisation’s Trade Facilitation Agreement(TFA). It will be implemented in between the years ______.
A Sonar of a ship sends sounds waves of speed 1600 m/s. These waves are reflected back by the ocean floor in 4 seconds. Find the depth (in m) of the ocean floor.
_________ is a natural electrical phenomenon characterized by the appearance of streamers of reddish or greenish light in the sky, especially near the northern or southern magnetic pole.