Physics · 2021
JEE Main · 27 July 2021, Shift 1 · Q3
The relative permittivity of distilled water is 81. The velocity of light in it will be: (Given μ_r =1 )
The relative permittivity of distilled water is $\displaystyle 81$ . The velocity of light in it will be :
(Given $\displaystyle \mu_{\mathrm{r}}=1$ )
Official answer
(1)
$\displaystyle 3.33 \times 10^7 \mathrm{~m} / \mathrm{s}$
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.