Radio waves from a star, of wavelength 180 m, reach a radio telescope by two separate paths, as shown in the figure belo

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Radio Waves From A Star Of Wavelength 180 M Reach A Radio Telescope By Two Separate Paths As Shown In The Figure Belo 1 (38.12 KiB) Viewed 99 times

Radio waves from a star, of wavelength 180 m, reach a radio telescope by two separate paths, as shown in the figure below (not drawn to scale). One is a direct path to the receiver, which is situated on the edge of a cliff by the ocean. The second is by reflection off the water. The first minimum of destructive interference occurs when the star is 8 = 28.0° above the horizon. Find the height of the cliff. (Assume no phase change on reflection. The image is not drawn to scale; assume that the height of the radio telescope is negligible compare to the height of the cliff.) m Direct path Radio telescope Reflected path