State True/False(a) After refraction, the wave has the same speed, wavelength and direction but different frequency.(b) Reflection is the amount of sound energy that is reflected off a surface.
Question
State True/False(a) After refraction, the wave has the same speed, wavelength and direction but different frequency.(b) Reflection is the amount of sound energy that is reflected off a surface.
Solution
(a) False. After refraction, the wave may have a different speed, wavelength, and direction, but the frequency remains the same. Refraction occurs when a wave passes from one medium to another, causing a change in its speed and direction due to the change in the medium's properties.
(b) True. Reflection refers to the amount of sound energy that is bounced back or reflected off a surface. When sound waves encounter a surface, they can be absorbed, transmitted, or reflected. The amount of sound energy that is reflected depends on the properties of the surface, such as its texture and angle of incidence.
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