Select the word which means the same as the group of words given.

Branch of physics dealing with the properties of sound

acoustics

The correct answer is acoustics.

Here is a detailed explanation of the options:

• Acoustics is the branch of physics that deals with the properties of sound. It studies how sound is produced, transmitted, and received. Acoustics is used in a wide variety of fields, including music, architecture, and engineering.
• Audition is the act of listening to someone or something. It is a physiological process that involves the ear, the brain, and the nervous system. Audition is not a branch of physics.
• Radiation is the emission of energy in the form of waves or particles. It is a broad term that includes many different types of radiation, such as light, heat, and radio waves. Radiation is not a branch of physics that specifically deals with the properties of sound.
• Mechanics is the branch of physics that deals with the motion of objects. It studies the forces that act on objects and how those forces cause objects to move. Mechanics is not a branch of physics that specifically deals with the properties of sound.

Therefore, the only option that means the same as the group of words "branch of physics dealing with the properties of sound" is acoustics.