Relative permittivity of water is 81 . If \( \varepsilon_{w} \) and \( \varepsilon_{0} \) are pe...

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Relative permittivity of water is 81 . If \( \varepsilon_{w} \) and \( \varepsilon_{0} \) are permittivities of water and vacuum respectively, then:
(A) \( \varepsilon_{0}=9 \varepsilon_{w} \)
(B) \( \varepsilon_{0}=81 \varepsilon_{w} \)
(C) \( \varepsilon_{w}=9 \varepsilon_{0} \)
(D) \( \varepsilon_{w}=81 \varepsilon_{0} \)
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