The turning effect of a force is called: A) Pressure B) Momentum C) Torque D) Energy Answer: C) Torque
The SI unit of torque is: A) Joule B) Newton C) Newton-meter D) Watt Answer: C) Newton-meter
Torque is equal to: A) Force × Velocity B) Force × Distance from pivot C) Mass × Acceleration D) Pressure × Area Answer: B) Force × Distance from pivot
A point about which an object turns is called: A) Axis B) Pivot C) Radius D) Edge Answer: B) Pivot
Which quantity is a vector? A) Torque B) Distance C) Speed D) Time Answer: A) Torque
The formula of torque is: A) τ = m × a B) τ = F × d C) τ = P × A D) τ = m × g Answer: B) τ = F × d
If force is doubled and distance remains constant, torque becomes: A) Half B) Same C) Double D) Zero Answer: C) Double
The turning effect depends upon: A) Magnitude of force only B) Distance from pivot only C) Both force and distance from pivot D) Time Answer: C) Both force and distance from pivot
A door handle is fixed away from the hinges because: A) It looks attractive B) Greater torque is produced C) Less force is needed at hinges D) Weight increases Answer: B) Greater torque is produced
In a see-saw, the support acts as: A) Lever arm B) Pivot C) Force D) Load Answer: B) Pivot
Torque is maximum when force acts: A) Parallel to lever arm B) At 45° C) Perpendicular to lever arm D) Opposite to motion Answer: C) Perpendicular to lever arm
Which of the following is an example of turning effect? A) Pushing a wall B) Opening a door C) Throwing a ball D) Stretching a spring Answer: B) Opening a door
Clockwise torque is usually taken as: A) Positive B) Negative C) Zero D) Infinite Answer: B) Negative
Anticlockwise torque is generally considered: A) Positive B) Negative C) Constant D) Variable Answer: A) Positive
If a force passes through the pivot, the torque produced is: A) Maximum B) Minimum C) Zero D) Infinite Answer: C) Zero
The perpendicular distance between pivot and line of action of force is called: A) Radius B) Moment arm C) Diameter D) Axis Answer: B) Moment arm
Which device works on the principle of torque? A) Thermometer B) Screwdriver C) Ammeter D) Stopwatch Answer: B) Screwdriver
The principle of moments states that for equilibrium: A) Clockwise moment = Anticlockwise moment B) Force = Mass C) Pressure = Force/Area D) Momentum is constant Answer: A) Clockwise moment = Anticlockwise moment
A body is balanced when net torque is: A) Maximum B) Positive C) Negative D) Zero Answer: D) Zero
A spanner with a longer handle provides: A) Less torque B) Greater torque C) Same torque D) Zero torque Answer: B) Greater torque Numerical MCQs
A force of 10 N acts at 2 m from pivot. Torque is: A) 5 Nm B) 10 Nm C) 20 Nm D) 40 Nm Answer: C) 20 Nm
A 5 N force acts 4 m from pivot. Find torque. A) 9 Nm B) 20 Nm C) 25 Nm D) 40 Nm Answer: B) 20 Nm
A torque of 30 Nm is produced by a force of 10 N. The perpendicular distance is: A) 1 m B) 2 m C) 3 m D) 4 m Answer: C) 3 m
A force of 50 N acts at 0.5 m. Torque is: A) 10 Nm B) 15 Nm C) 20 Nm D) 25 Nm Answer: D) 25 Nm
A force of 8 N acts at 3 m from pivot. Torque equals: A) 24 Nm B) 11 Nm C) 5 Nm D) 18 Nm Answer: A) 24 Nm
A torque of 40 Nm is produced by force 20 N. Distance is: A) 1 m B) 2 m C) 3 m D) 4 m Answer: B) 2 m
If force = 6 N and distance = 5 m, torque is: A) 25 Nm B) 30 Nm C) 35 Nm D) 40 Nm Answer: B) 30 Nm
A 12 N force acts at 2.5 m. Torque produced is: A) 20 Nm B) 24 Nm C) 30 Nm D) 35 Nm Answer: C) 30 Nm
A torque of 18 Nm is produced by a 6 N force. Distance from pivot is: A) 2 m B) 3 m C) 4 m D) 5 m Answer: B) 3 m
A force of 25 N acts at 4 m. Torque is: A) 75 Nm B) 80 Nm C) 90 Nm D) 100 Nm Answer: D) 100 Nm More Conceptual MCQs
Which type of lever is a see-saw? A) First-class lever B) Second-class lever C) Third-class lever D) Fourth-class lever Answer: A) First-class lever
In equilibrium, the algebraic sum of torques is: A) One B) Infinite C) Zero D) Maximum Answer: C) Zero
Which increases torque without changing force? A) Increasing time B) Increasing distance from pivot C) Reducing mass D) Reducing velocity Answer: B) Increasing distance from pivot
Which instrument uses the turning effect of force? A) Nutcracker B) Thermometer C) Barometer D) Hydrometer Answer: A) Nutcracker
The turning effect is also known as: A) Moment of force B) Momentum C) Pressure D) Density Answer: A) Moment of force
Which factor does NOT affect torque? A) Force B) Distance from pivot C) Direction of force D) Colour of object Answer: D) Colour of object
A body rotates when: A) Net force is zero B) Net torque is non-zero C) Pressure is constant D) Temperature increases Answer: B) Net torque is non-zero
If clockwise moment is greater than anticlockwise moment, body rotates: A) Anticlockwise B) Clockwise C) Upward D) Downward Answer: B) Clockwise
Torque has dimensions of: A) Force × Length B) Force × Area C) Length × Time D) Mass × Velocity Answer: A) Force × Length
The pivot in scissors is located: A) At one end B) At the centre C) At the blade tip D) Outside the blades Answer: B) At the centre
Which is NOT a lever? A) Crowbar B) Nutcracker C) Screwdriver D) Thermometer Answer: D) Thermometer
Unit Nm stands for: A) Newton meter B) Newton mass C) Normal meter D) New minute Answer: A) Newton meter
Torque is zero when angle between force and lever arm is: A) 0° B) 90° C) 180° D) Both A and C Answer: D) Both A and C
Which produces maximum turning effect? A) Force parallel to lever arm B) Force perpendicular to lever arm C) No force D) Equal forces Answer: B) Force perpendicular to lever arm
Which quantity determines rotational equilibrium? A) Velocity B) Torque C) Temperature D) Pressure Answer: B) Torque
A mechanic uses a long wrench to: A) Increase pressure B) Increase torque C) Reduce mass D) Increase speed Answer: B) Increase torque
Which law explains balancing of a beam? A) Newton’s First Law B) Principle of Moments C) Ohm’s Law D) Hooke’s Law Answer: B) Principle of Moments
A body with equal clockwise and anticlockwise moments is in: A) Acceleration B) Rotation C) Equilibrium D) Motion Answer: C) Equilibrium
The farther the force from pivot, the __ the torque. A) Smaller B) Greater C) Constant D) Zero Answer: B) Greater
Which statement is correct? A) Torque depends only on force. B) Torque depends only on distance. C) Torque depends on both force and perpendicular distance. D) Torque does not depend on pivot. Answer: C) Torque depends on both force and perpendicular distance.
The moment arm is always measured: A) Parallel to force B) Along the rod C) Perpendicular to the line of action of force D) Vertically downward Answer: C) Perpendicular to the line of action of force
A force of 15 N acts at a distance of 2 m. The torque is: A) 17 Nm B) 25 Nm C) 30 Nm D) 35 Nm Answer: C) 30 Nm
Which quantity has the unit Newton-meter? A) Pressure B) Work C) Torque D) Power Answer: C) Torque
In a wheel and axle, the turning effect is produced by: A) Mass B) Torque C) Pressure D) Velocity Answer: B) Torque
The SI unit of moment of force is: A) Joule B) Newton-meter C) Watt D) Pascal Answer: B) Newton-meter
A body is in rotational equilibrium when: A) Resultant force is maximum B) Resultant torque is zero C) Velocity is constant D) Pressure is zero Answer: B) Resultant torque is zero
Which device acts as a first-class lever? A) Wheelbarrow B) Nutcracker C) Scissors D) Tweezers Answer: C) Scissors
A torque of 50 Nm is produced by a force of 10 N. The moment arm is: A) 2 m B) 3 m C) 4 m D) 5 m Answer: D) 5 m
Which one is not affected by torque? A) Rotation B) Angular acceleration C) Equilibrium D) Temperature Answer: D) Temperature
The tendency of a force to rotate an object about an axis is called: A) Power B) Torque C) Work D) Impulse Answer: B) Torque
The formula τ = F × d gives: A) Momentum B) Torque C) Work D) Power Answer: B) Torque
If distance from pivot is doubled, torque becomes: A) Half B) Four times C) Double D) Unchanged Answer: C) Double
Which factor is directly proportional to torque? A) Time B) Distance from pivot C) Volume D) Temperature Answer: B) Distance from pivot
The line joining the pivot and point of application of force is called: A) Lever arm B) Radius C) Axis D) Diameter Answer: A) Lever arm
Which of the following works on the principle of moments? A) Beam balance B) Barometer C) Hydrometer D) Thermometer Answer: A) Beam balance Numerical MCQs
A force of 20 N acts at 3 m from the pivot. Torque is: A) 40 Nm B) 50 Nm C) 60 Nm D) 80 Nm Answer: C) 60 Nm
Torque produced by 8 N force acting at 5 m is: A) 30 Nm B) 35 Nm C) 40 Nm D) 45 Nm Answer: C) 40 Nm
A torque of 24 Nm is produced by a force of 6 N. Find the distance. A) 2 m B) 3 m C) 4 m D) 5 m Answer: C) 4 m
A force of 12 N acts at 4 m. Torque is: A) 36 Nm B) 40 Nm C) 48 Nm D) 52 Nm Answer: C) 48 Nm
A torque of 45 Nm is produced at a distance of 5 m. The force is: A) 7 N B) 8 N C) 9 N D) 10 N Answer: C) 9 N
A 25 N force acts 2 m from the pivot. Torque is: A) 40 Nm B) 45 Nm C) 50 Nm D) 55 Nm Answer: C) 50 Nm
If τ = 72 Nm and d = 6 m, force is: A) 10 N B) 12 N C) 14 N D) 16 N Answer: B) 12 N
A force of 18 N acting at 2 m produces torque equal to: A) 32 Nm B) 34 Nm C) 36 Nm D) 38 Nm Answer: C) 36 Nm
A force of 30 N produces a torque of 90 Nm. Distance from pivot is: A) 2 m B) 3 m C) 4 m D) 5 m Answer: B) 3 m
A 7 N force acts at 4 m. Torque equals: A) 21 Nm B) 24 Nm C) 28 Nm D) 32 Nm Answer: C) 28 Nm Theoretical MCQs
The principle of moments applies when a body is in: A) Translation B) Rotational equilibrium C) Acceleration D) Free fall Answer: B) Rotational equilibrium
In a balanced beam, clockwise moments are: A) Greater than anticlockwise moments B) Less than anticlockwise moments C) Equal to anticlockwise moments D) Zero Answer: C) Equal to anticlockwise moments
Which class of lever is a wheelbarrow? A) First class B) Second class C) Third class D) Fourth class Answer: B) Second class
Tweezers are examples of: A) First-class lever B) Second-class lever C) Third-class lever D) Hydraulic machine Answer: C) Third-class lever
A nutcracker is an example of: A) First-class lever B) Second-class lever C) Third-class lever D) Pulley Answer: B) Second-class lever
Which force produces no turning effect? A) Perpendicular force B) Parallel force through pivot C) Large force D) Variable force Answer: B) Parallel force through pivot
Torque depends upon the angle between force and lever arm. It is maximum at: A) 0° B) 30° C) 60° D) 90° Answer: D) 90°
The unit of torque is dimensionally equivalent to: A) Joule B) Watt C) Pascal D) Newton Answer: A) Joule
Which one is a third-class lever? A) Scissors B) Nutcracker C) Tweezers D) Beam balance Answer: C) Tweezers
Torque causes: A) Linear motion only B) Circular motion or rotation C) Expansion D) Vibration only Answer: B) Circular motion or rotation
A force acting along the line joining the pivot produces: A) Maximum torque B) Minimum torque C) Zero torque D) Infinite torque Answer: C) Zero torque
Which tool is used to tighten bolts by increasing torque? A) Wrench B) Thermometer C) Stopwatch D) Ammeter Answer: A) Wrench
Which quantity determines the effectiveness of a force in causing rotation? A) Torque B) Density C) Speed D) Current Answer: A) Torque
In a beam balance, equal weights at equal distances produce: A) Clockwise rotation B) Anticlockwise rotation C) Equilibrium D) Acceleration Answer: C) Equilibrium
The turning effect increases when the force acts: A) Near the pivot B) Through the pivot C) Far from the pivot D) Parallel to the lever arm Answer: C) Far from the pivot Mixed Conceptual MCQs
Which quantity is responsible for opening a door easily from the handle side? A) Pressure B) Torque C) Energy D) Power Answer: B) Torque
The pivot point of a beam balance is located: A) At one end B) At the centre C) At the base D) Outside the beam Answer: B) At the centre
The greater the moment arm, the __ the torque. A) Smaller B) Constant C) Greater D) Zero Answer: C) Greater
Which of the following is a first-class lever? A) Wheelbarrow B) Nutcracker C) Scissors D) Tweezers Answer: C) Scissors
A beam is balanced when the net moment is: A) Positive B) Negative C) Unity D) Zero Answer: D) Zero
Which quantity has both magnitude and direction? A) Mass B) Distance C) Torque D) Time Answer: C) Torque
A force acting closer to the pivot produces: A) Greater torque B) Smaller torque C) Infinite torque D) Same torque Answer: B) Smaller torque
The turning effect of force is also called: A) Momentum B) Moment of force C) Pressure D) Inertia Answer: B) Moment of force
Which law is used in balancing a see-saw? A) Newton’s Second Law B) Principle of Moments C) Hooke’s Law D) Ohm’s Law Answer: B) Principle of Moments
The algebraic sum of clockwise and anticlockwise moments in equilibrium is: A) One B) Infinite C) Zero D) Maximum Answer: C) Zero