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Q.What is the principle of a ‘Life Jacket’?

  • AIt provides oxygen to a drowning person
  • BIt increases the volume of the person to keep him afloat
  • CIt decreases the volume of the person to keep him afloat
  • DThe person can sit on it like a raft
Correct Answer : (B)

It increases the volume of the person to keep him afloat

Hints :

It increases the volume of the person to keep him afloat.

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