Which of the following is an example of non-contact force?
I. Magnetic force
II. Gravitational force
Show answer & explanation
Correct answer: C
Explanation
Correct Answer:
Option 3: Both I and II
Explanation:
Non-contact forces are those forces that act without physical contact. Magnetic force and gravitational force are both examples of non-contact forces. Magnetic force acts between magnets and objects at a distance, while gravitational force attracts objects towards the Earth.
Therefore, both statements are correct.
Additional Facts:
Option 1: Only I is incorrect because gravitational force is also a non-contact force.
Option 2: Only II is incorrect because magnetic force is also a non-contact force.
Option 4: Neither is incorrect because both statements are correct.
Probable Exam Questions:
Q: Give an example of contact force.
A: Frictional force
Q: Who discovered gravity?
A: Isaac Newton
Q: What type of force is electric force?
A: Non-contact force
Q: What type of force is friction?
A: Contact force