NextMockપરીક્ષાઓ શોધો, દા.ત. SSC CGL, UPPSC, Lekhpal
State PCS PYQPrelims 2018

UPPCS · પ્રશ્ન 124

Which of the following represents the decibel level of rustling of tree leaves in normal circumstance?

  1. 10 dB
  2. 20 dB
  3. 60 dB
  4. 100 dB
જવાબ બતાવો અને સમજૂતી

જવાબ: (B) 20 dB

સમજૂતી

Rustling leaves are about 20 dB (a whisper is about 30 dB, normal conversation about 60 dB).