Here is a question about this article: The Rajpath which was built similar to the Champs-Élysées in Paris is the ceremonial boulevard for the Republic of India located in New Delhi. The annual Republic Day parade takes place here on 26 January.
What is the answer to this question: The Rajpath was constructed similarly to what famous Parisian street?
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So... the Champs-Élysées


Here is a question about this article: The effective area or effective aperture of a receiving antenna expresses the portion of the power of a passing electromagnetic wave which it delivers to its terminals, expressed in terms of an equivalent area. For instance, if a radio wave passing a given location has a flux of 1 pW / m2 (10−12 watts per square meter) and an antenna has an effective area of 12 m2, then the antenna would deliver 12 pW of RF power to the receiver (30 microvolts rms at 75 ohms). Since the receiving antenna is not equally sensitive to signals received from all directions, the effective area is a function of the direction to the source.
What is the answer to this question: What effects the function of signals received by an antenna?
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So... direction


Here is a question about this article: The radiation of many antennas shows a pattern of maxima or "lobes" at various angles, separated by "nulls", angles where the radiation falls to zero. This is because the radio waves emitted by different parts of the antenna typically interfere, causing maxima at angles where the radio waves arrive at distant points in phase, and zero radiation at other angles where the radio waves arrive out of phase. In a directional antenna designed to project radio waves in a particular direction, the lobe in that direction is designed larger than the others and is called the "main lobe". The other lobes usually represent unwanted radiation and are called "sidelobes". The axis through the main lobe is called the "principal axis" or "boresight axis".
What is the answer to this question: What is the term that refers to areas where an antennas radiation is zero? 
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So...
nulls