UGC NET Paper 1 — Physics
40 questions across 8 years
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4 questions shown from 2021.
What will be the resultant of two noise levels of 81 dB and 90 dB generated by two independent sources?
Given below are two statements : Statement I: Solar flat plat collectors essentially work on the principle of Green House Effect. Statement II: Black absorber plat radiates infrare...
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...