Question

Which of the following is true about non-contact forces?
i. Non-contact forces can act only when the two bodies are in contact with each other.
ii. Non-contact forces can act only when the two bodies are not in contact with each other.
iii. Non-contact forces can act when the bodies are in contact with each other.
iv. Non-contact forces can act when the bodies are not in contact with each other.

• A. Only i
• B. Only ii
• C. Only iv
• D. iii and iv

Answer 1

The correct option is D iii and iv

• Non-contact forces can act even when the bodies are in contact with each other.
• For example, the gravitational force of Earth acts on bodies resting on the ground as well as on bodies flying in the atmosphere.