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When a body is set into vibration,
it vibrates with a particular
frequency of its own . This
frequency is its natural frequency.
ഒരു വസ്തുവിനെ
സ്വതന്ത്രമായി കമ്പെം
നെയ്യിച്ചാൽ
അതിൻനെതായ ഒരു
ന്ത്രത്തേക
ആകൃതിയിലായിരിക്ും
കമ്പെം നെയ്യുന്നത്. ഈ
ആവൃത്തിനയ അതിൻനെ
സ്വാഭാവിക ആവൃത്തി
എന്നാണ് രെയുന്നത്
The factors that influence the
natural frequency of a body are
Nature of a body
Area
length
tension
ഒരു വസ്തുവിന്നെ
സ്വാഭാവിക
ആവൃത്തിനയ
സ്വാധീെിക്ുന്ന
ഘടകങ്ങളാണ്
രദാർത്ഥത്തിന്നെ
സ്വഭാവം
രരപ്പളവ്
െീളം
Sound pair High pitch Low pitch
Male voice, female
voice
Cuckoo's cry, lions roar
During whistle, drums
sound
Sound pair High pitch Low pitch
Male voice, female
voice
Female voice Male voice
Cuckoo's cry, lions roar Cuckoo's cry Lions roar
During whistle, drums
sound
During whistle Drums sound
The sharpness of the sound heard
is the pitch. It depends on the
frequency of sound.
ത്കൾക്ുന്ന ശബ്ദത്തിന്നെ
കൂർമ്മതനയ സ്ഥായി (pitch)
എന്നാണ് രെയുന്നത്. ഇത്
ശബ്ദത്തിൻനെ
ആവൃത്തിനയ
ആന്ത്ശയിച്ചിരിക്ുന്നു.
Loudness is the measure of
audibility of a person. This
depends mainly on the amplitude
of vibration and the sensory
audibility of the ear . The unit of
loudness is decibel (dB). This is
measured using a device named
decibel metre.
ശബ്ദം ഒരാളിൽ ഉണ്ടാക്ുന്ന
ത്കൾവി അെുഭവത്തിന്നെ
അളവാണ് ഉച്ചത(loudness).
ഇത് ന്ത്രധാെമായും കമ്പെ
ആയതിനയയും നെവിയുനട
ന്ത്രാന്ത്രിതനയയും
ആന്ത്ശയിച്ചിരിക്ുന്നു.
ഇതിൻനെ യൂണിറ്റാണ്
നെസ്ിബൽ(dB). ഇത്
നെസ്ിബൽ മീറ്റർ എന്ന
ഉരകരണം നകാണ്ട്
അളക്ാം.

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Natural frequency