JEE Mains · Physics · STD 12 - 9. Ray optics and optical instruments
The relative permittivity of distilled water is \(81 .\) The velocity of light in it will be \(....\,\times 10^{7}\,{m} / {s}\) \(\left(\right.\) Given \(\left.\mu_{r}=1\right)\)
- A \(5.33\)
- B \(4.33\)
- C \(3.33\)
- D \(2.33\)
Answer & Solution
Correct Answer
(C) \(3.33\)
Step-by-step Solution
Detailed explanation
\(V=\frac{c}{\sqrt{\mu_{r} \varepsilon_{r}}}\) \(V=3.33 \times 10^{7} \;m / sec\)
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