Cite an experiment to show that sound needs a material for its propagation.

Cite an experiment to show that sound needs a meterial for its propagation.

Describe an experiment to show that sound cannot propagate in vacuum.

Describe an experiment to show that sound travels through liquids.

Does sound need a medium to travel? Describe an activity to show that sound is a mechanical wave and need a material medium for its propagation.

Describe an experiment to show that cathode rays are made up of material particles.

Describe an experiment to show that sound waves can be reflected. What are the laws of reflection of sound waves.

Sound Needs A Medium

Following are down the steps of an experiment to prove that medium is required for the propagation of sound waves. Arrange these steps in propagation of sound waves. Arrange these steps in proper sequence (a) Consider a glass jar with an outlet connected to a vacuum pump and a closed lid (b) Suspend an electric bell. (c) Evacuate the jar by using a vaccum pump (d) Switch on the electric bell (e) Observe that the intensity of the sound is less when the jar is evacuated (f) This proves that medium is required for the propagation of sound

STATEMENT-1 : Velocity of light depends on electric and magnetic properties of medium, STATEMENT-2 : Electromagnetic wve does not need any material medium for its propagation.