Two coaxial cables 1 and 2 are filled with different dielectric

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Two coaxial cables 1 and 2 are filled with different dielectric constants εr1 and εr2 respectively the ratio of the wavelengths in the two cables λ1/λ2 is—

1. √ε_{r₁/ε_r₂}
2. √ε_{r₂/ε_r₁}
3. ε_{r₁ /ε_r₂}
4. ε_{r₂/ε_r₁}

Correct Option: B

Ratio of their wavelength will be

λ₁	=	v₁	=	1/√μ₁ε₁
λ₂	=	v₂	=	1/√μ₂ε₂

⇒

√μ₂ε₂	=	√μ₀ε₀ε_r₂	=	√	ε_r₂
√μ₁ε₁		√μ₀ε ₀ε_r₁			ε_r₁