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Echo of Sound MCQs App & e-Book Download - 349

MCQ:

When sound is incident on the surface of a medium it bounces back into the first medium. The phenomenon is called

  1. refraction of sound
  2. deflection of sound
  3. defraction of sound
  4. reflection of sound

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Echo of Sound App (Android & iOS)

Echo of Sound App (Android & iOS)

10th Grade Physics App (Android & iOS)

10th Grade Physics App (iOS & Android)

9th Grade Physics App (Android & iOS)

9th Grade Physics App (Android & iOS)

A Level Physics App (Android & iOS)

A Level Physics App (iOS & Android)