Fundamental forces of nature

The video tutorial explores the four fundamental forces: gravitational, electromagnetic, strong nuclear, and weak nuclear forces. Gravitational force is universal and always attractive, acting between masses. Electromagnetic force occurs between charged objects and can be attractive or repulsive. Strong nuclear force, the strongest of all, holds nucleons together in the nucleus, overcoming repulsive forces between protons. Weak nuclear force is responsible for beta decay, emitting electrons and neutrinos. Each force has unique characteristics and plays a crucial role in the stability and interactions of matter.

Which of the following forces is always attractive?

• Electromagnetic force

• Weak nuclear force

• Gravitational force

• Strong nuclear force

What is the main characteristic of electromagnetic forces?

• They are stronger than strong nuclear forces.

• They can be both attractive and repulsive.

• They are always repulsive.

• They only occur between neutral objects.

What is the role of the strong nuclear force in an atom?

• It repels protons from each other.

• It holds the nucleus together.

• It is weaker than electromagnetic force.

• It causes beta decay.

Which force is responsible for beta decay?

• Gravitational force

• Weak nuclear force

• Electromagnetic force

• Strong nuclear force

How does the weak nuclear force compare to the other forces?

• It is stronger than the strong nuclear force.

• It acts over large distances.

• It is weaker than the gravitational force.

• It is stronger than the gravitational force but weaker than the electromagnetic force.