MCQs on Work Formula

What is the SI unit of work?

• Newton

• Joule

• Watt

• Pascal

Which of the following conditions must be met for work to be done?

• A force must be applied

• The object must move

• The force must have a component in the direction of displacement

• All of the above

If an object does not move despite a force being applied, what is the work done?

• Zero

• Positive

• Negative

• Infinite

Which component of force contributes to work done?

• Perpendicular component of force

• Horizontal component of force

• Vertical component of force

• The total force always contributes

What happens to the work done if the angle θ is 90°?

• Work is maximum

• Work is minimum

• Work is zero

• Work is negative

A force of 10 N is applied to move an object by 5 m in the same direction. How much work is done?

• 50 J

• 40 J

• 10 J

• 5 J

A force of 20 N is applied at an angle of 60° to the direction of displacement of 4 m. What is the work done?

• 40 J

• 60 J

• 80 J

• 100 J

A person lifts a 10 kg object to a height of 2 m. Find the work done (take g = 9.8 m/s²).

• 19.6 J

• 98 J

• 196 J

• 9.8 J

A 50 N force moves an object 10 m at an angle of 30° with the horizontal. What is the work done?

• 250 J

• 433 J

• 500 J

• 866 J

A force of 5 N acts at 90° to the displacement of 3 m. What is the work done?

• 0 J

• 15 J

• -15 J

• 5 J