Work, Energy and Power
CHAPTER REVISION TEST
CLASS XI - PHYSICS
Q1: When an air bubble rises in water, what happens to its potential energy? 
Q2: A spring is cut into two equal halves. How is the spring constant of each half affected? 
Q3: What should be the angle between the force and the displacement for maximum and minimum work? 
Q4: The momentum of an object is doubled. How does it’s. K.E. change? 
Q5: What is work done in holding a 15kg suitcase while waiting for a bus for 15 minutes?