Question

Which of the following are fundamental forces?

• A. Gravitational force
• B. Electromagnetic force
• C. Mechanical force
• D. Frictional force

Answer 1

Answer: (A), (B)

The correct options are
A Gravitational force
B Electromagnetic force

Fundamental forces are the basic forces which act in the universe. All the forces can be categorized under one of these forces.
There are four fundamental forces:

1. Gravitational force
2. Weak nuclear force
3. Strong nuclear force
4. Electromagnetic force

Mechanical force are forces due to machines. Most of the mechanical forces lie in the category of electromagnetic forces.
Frictional force at a microscopic level is caused due to electromagnetic forces.