Question Paper from: Railway RRB Group D (Paper -III)

The persistence of sound in an auditorium is due to :

1:

Single reflection of sound 

2:

Repeated reflections of sound

3:

Repeated refraction of sound

4:

Vibration of objects placed in the auditorium

Solution:
Chapter Name: Science

This has been asked in Question Paper

Railway RRB Group D (Paper -III)

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