We hear echo when sound:

A ) Reaches us direct from the source

B ) Comes after bouncing back from a well at a certain distance ✅

C ) Comes from a loud speaker

D ) Is very loud

Related Questions
  1. .....is a form of energy that helps us to see things around us:
  2. Which of the following is not a form of energy?
  3. How many colours are present in the sunlight?
  4. Which bird uses echo to catch it's prey in the dark?
  5. If you take your hand near to the lighted lamp than to the walk, the shadow of your hand.
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