which pandyan king invaded Sri Lanka
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Sound waves are created when sounds make vibrations in the air. In this activity, your voice vibrates the air inside the cup, which are then transferred to the bottom of the cup. The bottom of the cup passes the sound waves to the string, and so on to the other cup.
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Answer:
king Sena I
Srimara invaded Sri Lanka during the reign of king Sena I, ravaged northern countries and sacked the city of Anuradhapura. The king fled from his capital and took refuge in the Malaya country.
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