The statement “friction force is a contact force while magnetic force is a non-contact force” is
[amp_mcq option1=”always true.” option2=”true only at 0°C.” option3=”a false statement.” option4=”either true or false depending upon the temperature of the surroundings.” correct=”option1″]
This question was previously asked in
UPSC NDA-1 – 2021
The statement “friction force is a contact force while magnetic force is a non-contact force” is always true.
Contact forces arise from the physical contact between objects (e.g., friction, normal force). Non-contact forces (also known as field forces) act between objects even when they are not in physical contact (e.g., gravitational force, magnetic force, electrostatic force). Friction requires surfaces to be in contact, while magnetic forces act through a magnetic field, regardless of contact.