In Indian parliamentary system, the leader of the largest opposition party having not less than _______ seats of total strength of the house is recognized as the leader of the opposition in that House.
A body of mass 3 kg accelerates from 10 m/s to 20 m/s in 5 seconds due to the application of a force on it. Calculate the magnitude of this force (in N).
The method of soil conservation in which stones, grass, soil are used to build barriers along contours and trenches are made in front of the barriers to collect water is called?