Force

Q. Choose the correct chronological order of operation of an induction cooker.
1. Magnetic field due to the primary coil induces a current in the secondary coil.
2. The material of the cooking pan resists the induced current and heats up to cook food.
3. A magnetic field is set up in the primary coil of the induction cooker.
4. Current is supplied to the induction cooker.

1. 4 - 3- 1 - 2
2. 1 - 2- 3 - 4
3. 4 - 1- 2 - 3
4. 1 - 4- 3 - 2

Q. Which of the following property of a proton can change while it moves freely in a uniform magnetic field?

1. Mass
2. Speed
3. Velocity
4. Charge

Q.

Choose the correct statement:

Statement 1: A body moves along the direction of force.

Statement 2: A body moves in the direction of velocity.

Statement 3: Forces acting inside the system are called pseudo forces.

Statement 4: Forces acting outside the system are called external forces.

1. All statements are correct.

2. Except statement 2, all other statements are correct.

3. Except statement 2 and 3, all other statements are correct.

4. Only statement 2 and 4 are correct.

Q.

Find the odd one out based on their units of measurement.

1. Work done

2. Force

3. Kinetic energy

4. Potential energy

Q.

Which instrument do scientists often use to measure the amount of force?

1. Magnet

2. Thermometer

3. Spring Scale

4. Balance

Q. How many dynes make one Newton?

1. 10^7
2. 10^5
3. 2^10
4. 10^Pi

Q. ________ is the push or pull acting upon an object.

1. Inertia
2. Impulse
3. Force
4. Momentum

Q.

A force produces an acceleration of $5.0m/s^2$ when it acts on a body of mass 2 kg for 2 seconds. Find the work done by the force.

1. 50 J

2. 120 J

3. 80 J

4. 100 J

Q. $kgm{s}^{-2}$ is the unit of:

1. Force
2. Impulse
3. Pressure
4. Inertia

Q.

Choose the correct answer regarding force.

1. Force can be seen by humans

2. Force can be heard by humans

3. All of the above

4. Humans can feel the effect of force