Mining Engineering > GATE 2018 > Mine Safety
A person standing 50 m away from an HEMM experiences 90 dB sound pressure level. If the person moves to a new location that is 70 m away from the HEMM, the sound pressure level experienced by the person, in dB, becomes ________.

Correct : 86.75

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sound pressure level HEMM GATE Mining Engineering 2018 distance sound pressure level dB sound pressure level mining engineering acoustics HEMM sound pressure sound pressure level calculation GATE 2018 mining

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