Physics Practicals Class 9

Experiment on Reflection of Sound

  • Teach science experiments in a gamified way
  • Boost conceptual clarity and knowledge retention
  • Aligned with National Education Policy 2020
  • Helpful in getting NAAC accreditation
  • CBSE, ICSE, and state boards aligned curricula
  • Engaging simulations with easy-to-teach instructions

About Simulation

  • Engage in a simulated experiment exploring the reflection of sound waves.
  • Investigate concepts such as angle of incidence, angle of reflection, and the behavior of sound waves upon encountering different surfaces.
  • Utilize interactive tools to measure the time taken for sound waves to reflect off various surfaces and return to the source.
  • Explore the relationship between the angle of incidence and the angle of reflection, observing how it affects the direction of sound propagation.
  • Experience a highly immersive virtual environment that closely replicates the experimental setup of a real laboratory.
  • Encounter real-life scenarios where understanding sound reflection is crucial, such as in architectural acoustics or sonar systems.

Physics Practical Class

  • Gain practical insights and problem-solving skills applicable to fields like engineering, architecture, and audio technology.

Simulation Details

Duration – 30 Minutes
Easily Accessible
Languages – Odia & English
Platforms – Android & Windows


What is reflection?
Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns to the medium from which it originated. Common examples include the reflection of light, sound, and water waves.

Do you know how sound propagates?
Sound propagates through the air as a longitudinal wave. The speed of sound is determined by the properties of the air, and not by the frequency or amplitude of the sound. If a sound is not absorbed or transmitted when it strikes a surface, it is reflected. The law for reflection is the same as that of light, i.e., the angle of incidence of a sound wave equals the angle of reflection, just as if it were produced by a ‘mirror image’ of the stimulus on the opposite side of the surface.

How do we describe the reflection of sound?
When sound travels in a given medium, it strikes the surface of another medium and bounces back in some other direction, this phenomenon is called the reflection of sound. The waves are called incident and reflected sound waves.

Requirements for this Science Experiment

  • Drawing board
  • Protractor
  • Hollow glass tube
  • Clock

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