1st Year Physics Chapter 5 Test05. Work and Kinetic Energy

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. The odd force from the following is
   1. gravitational force
   2. elastic force
   3. frictional force
   4. electric force
2. Negative work occurs when:
   1. Force is perpendicular to displacement
   2. Force is in same direction as displacement
   3. Force is opposite to displacement
   4. Force is zero
3. SI unit of work is:
   1. Watt
   2. Joule
   3. Newton
   4. Pascal
4. Which of the following is a conservative field?
   1. Frictional field
   2. Gravitational field
   3. Viscous field
   4. Air resistance field
5. Work done around a closed path in a conservative field is:
   1. Positive
   2. Negative
   3. Zero
   4. Infinite
6. Work is positive when the angle between force and displacement is:
   1. 0° to 90°
   2. 90° to 180°
   3. 180° to 270°
   4. 270° to 360°
7. Which of the following is an example of a non-conservative force?
   1. Electric force
   2. Gravitational force
   3. Frictional force
   4. Magnetic force
8. According to the work-energy theorem, work done on an object equals:
   1. Change in mass
   2. Change in energy
   3. Change in time
   4. Change in pressure
9. Variable force produces which shape on Force-Displacement graph?
   1. Square
   2. Triangle
   3. Rectangle
   4. Horizontal line
10. The Work-Energy Theorem states:
    1. W = Fd
    2. W = ΔK.E
    3. W = K.Ei + K.Ef
    4. W = F/v