## 1. Work is a __________ ?

1. Vector quantity
2. Fundamental quantity
3. Scalar quantity
4. Both (A) and (B)

Memory: Work is a scalar quantity, because it has only magnitude but no direction.

Define work : Definition of Work : If a body gets displaced by applying an external force on it then, the scalar product of that force and displacement is called work.

## 2. SI unit of work is ?

1. Newton
2. Watt
3. Joule
4. Calorie

Memory: SI unit of work is joule.

## 3. If a body gets displaced by applying a force on it, then it is called ?

1. Energy
2. Power
3. Displacement
4. Work

Memory: If an object gets moved by applying an external force, then it is said to be work is done.

## 4. When force and displacement are in same direction, then work equals ?

1. Zero
2. Infinite
3. W = FScos𝛉
4. W = FS

Memory: When force and displacement are in same direction, then the angle between them is o degree, and the value of cosO is 1. Thus, W = FS.

## 5. In case of uniform circular motion, work done by the centripetal force is ?

1. Infinite
2. Zero
3. One
4. Can’t be determined

Memory: No memory is available.

## 6. If a body gets displaced by “S” when a force “F” acting on it, then work is ?

1. W = FSsin𝛉
2. W = FScos𝛉
3. W = FStan𝛉
4. W = FScot𝛉

Memory: The following is shown work formula :

1. ML-2T2
2. ML2T-2
3. ML3T-2
4. ML2T-3