Which of the following statement is true for the Fabry-Perot interferometer? Recall a Fabry-Perot interferometer in our experiment has two partial reflectors between a microwave transmitter and a microwave receiver all linearly aligned. The microwave wavelength cannot be determined in this setup. O The receiver intensity changes but cannot be detected by the receiver. Maxima are recorded by the receiver when the separation between the two partial reflectors are multiples of half the wavelength. Maxima are recorded by the receiver only if the separation between the partial reflectors are multiples of the wavelength. The receiver signal is independent of the separation between the partial reflectors.Two coherent sources of light have the same frequency and are located at positions P1 and P2. Suppose at t=0, waves of equal amplitude A are emitted but 180 degrees out of phase. These two waves travel in air to position Q and a detector measure a net amplitude of 2A . What can you conclude about the path lengths P1 to Q and P2 to Q? O They differ by a multiple of the wavelength. They differ by an odd multiple of half the wavelength. They differ by an odd multiple of the wavelength. The two path lengths are equal. They differ by an even multiple of half a wavelength.In a microwave Michelson interferometer, the transmitter is fixed in position and the microwave beam is split in half by a beam splitter. One of the beam goes to a fixed reflector and the other goes to a reflector that can be translated. The intensity of the combined beam is measured by a receiver which is also fixed in position. Which of the following statement is true in this measurement in the lab? This measurement cannot determine the wavelength of the microwave. The intensity of the receiver signal goes through maxima and minima as the reflector is translated. The intensity of the receiver signal is independent of the position of the translation of the reflector. The signal at the receiver is too small to make any conclusions. The transmitter and the receiver have crossed polarization because the beam splitter rotates by 90 degrees the polarization from the transmitter