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Statement (I): Capacitive proximity sensor can only be used for the detection of metal objects and is best with ferrous metals. Statement (II): One form of capacitive proximity sensor consists of a single capacitor plate probe with the other plate being formed by the object, which has to be metallic and earthed.
The phase difference of the waves 1 and 2 at A in the given figure is:
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In the given figure the phase of
Elements of Remote Sensing mcq question image