Electromagnetic Field Theory

Exercise: Electromagnetic Field Theory

📂 Electromagnetic Field Theory ✅

Questions for: Electromagnetic Field Theory

Refractive index of glass is 1.5. Find the wavelength of a beam of light with a frequency of 10¹⁴ Hz in glass. Assume velocity of light is 3 x 10⁸ m/sec in vacuum.

4 μm

3 μm

2 μm

1 μm

Answer: C

Given, μ = 1.6, f = 10¹⁴ Hz, v = 3 x 10⁸ m/sec.

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A broadside array consisting of 200 cm wavelength with 10 half-wave dipole spacing 10 cm. And if each array element feeding with 1 amp. current and operating at same frequency then find the half power beamwidth

4°

2°

10°

15°

Answer: B

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Z_L = 200 Ω and it is desired that Z_i = 50 Ω The quarter wave transformer should have a characteristic impedance of

100 Ω

40 Ω

10000 Ω

4 Ω

Answer: A

Z₀ = Z_i . Z_L

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