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Sound — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceSound1 Mark
Question
While designing an auditorium, an engineer uses which of the following points?
A: Makes concave back stage:
B: Uses sound absorbing materials.
C: Reduces reverberation time.
D: Increases echo.
✓

Answer

  1. A, B and C only.
Explanation:
Echo sounds produces by the calculation of area and no. of population in an Auditorium. Engineer’s can’t increases it, because it can be disturb the host or anyone which present in the Auditorium.

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