Fundamental Forces in Nature and Their Interactions

This video tutorial covers the four fundamental forces in nature: gravitational, electromagnetic, strong nuclear, and weak nuclear forces. It explains how gravity acts over long distances, attracting massive objects like planets. The electromagnetic force, also long-range, involves electric and magnetic interactions between charges. The strong nuclear force, a short-range force, holds atomic nuclei together despite electromagnetic repulsion. Lastly, the weak nuclear force is associated with radioactive decay, such as beta decay in carbon-14. Each force's characteristics and examples are discussed in detail.

Which of the following is true about gravitational force?

• It is a force of repulsion.

• It acts only over short distances.

• It increases with the mass of objects.

• It is stronger than electromagnetic force.

What happens to the gravitational force when the distance between two objects increases?

• It decreases.

• It becomes zero.

• It remains the same.

• It increases.

Which force can act over the longest distances?

• Weak nuclear force

• Strong nuclear force

• Electromagnetic force

• Gravitational force

How do like charges interact under the electromagnetic force?

• They form a magnetic field.

• They have no interaction.

• They repel each other.

• They attract each other.

What is created around a wire when electrons flow through it?

• A nuclear field

• A magnetic field

• A gravitational field

• An electric field

Which force is responsible for holding the nucleus of an atom together?

• Weak nuclear force

• Strong nuclear force

• Electromagnetic force

• Gravitational force

What is the range of the strong nuclear force?

• Long-range

• Short-range

• Infinite range

• Medium-range

Which force is associated with radioactive decay?

• Weak nuclear force

• Strong nuclear force

• Electromagnetic force

• Gravitational force

What particle is emitted during the beta decay of carbon-14?

• Proton

• Neutron

• Electron

• Photon

What element does carbon-14 turn into after beta decay?

• Helium-14

• Nitrogen-14

• Boron-14

• Oxygen-14