A paraboloid reflector has mouth diameter D meters, wavelength λ mete – McqOptions

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1.	A paraboloid reflector has mouth diameter D meters, wavelength λ meters. Its beam width φ is equal to
A.	70λ/D
B.	70D/λ
C.	λ/70D
D.	D/70λ
Answer» B. 70D/λ

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