Answer:
assertion is true but the reason is not true
Explanation:
If ur meaning cavins. a cavin is like a cave or a hollow route. idk if thats what ur asking?
Answer: Magnetic and gravitational force
Explanation: When a magnet and an iron nail are kept at a distance,the magnet attracts the nail without touching using magnetic force. In this example, the magnet and the nail are interacting.
The earth pulls the moon towards it and keeps it in orbit without touching it, using gravitational force. In this example,the moon and the earth are interacting.
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