The skin depth at 10 MHz for a conductor is 1 cm. The phase

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The skin depth at 10 MHz for a conductor is 1 cm. The phase velocity of an electromagnetic wave in the conductor at 1000 MHz is about—

1. 6 × 10⁶ m/s
2. 6 × 10⁷ m/s
3. 3 × 10⁸ m/s
4. 6 × 10⁸ m/s

Correct Option: B

Skin depth δ = 1 cm = 0.01 m

Phase velocity v_P =	ω	= ωδ
	β

= 2π f δ ⇒ 2π × 1000 × 10⁶ × 0.01
= 2π × 10⁷ m/s
= 6.28 × 10⁷ m/s