Statement I: If two people talk simulaneously and each creates an intensity of 60 dB at a point `P`, then total intensity level at the point P is 120 dB
Statement II: sound level is defined on a non-linear scale.

Options

A. Statement I is true, Statement II is true: Statement II is a correct explanation for statement I.
B. Statement I is true, Statement II is true, Statement II is NOT a correct explanation for Statement I.
C. Statement I is true, Statement II is false
D. Statement I is falce: Statement II is true

Answer

D

Explanation

`SL_f=10log((2I)/(I_0))`
Where `I` is the intensity at point `P` due to one person.
`60dB=SL=10log((I)/(I_0))`
`impliesSL_f=10log2+10log((I)/(I_0))=63.01dB`