UGC NET Paper 1 — Physics
40 questions across 8 years
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6 questions shown in Pollution.
A 20 dB increase in noise level represents an enhancement in intensity of sound by a factor of
Reducing the intensity of noise by a factor of 10 will mean a reduction in noise level by
What will be the resultant of two noise levels of 81 dB and 90 dB generated by two independent sources?
Noise levels (db) are referenced to the human hearing threshold at a frequency of
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R Assertion A: The decibel level for a given loudness may be different at differe...
Given below are two statements: Statement I: Two sounds of same intensity but different frequency characteristics appear to be of different loudness Statement II: The response of h...