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White noise is a synonym of ________

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White noise is a synonym of ________

(a) partition noise

(b) shot noise

(c) johnson noise

(d) transit time noise

I had been asked this question in an internship interview.

This is a very interesting question from Problems of DSBSC topic in portion Double Sideband Suppressed Carrier Modulation of Analog Communications

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The correct choice is (c) johnson noise

Explanation: White noise is an internal noise of communication system having different frequencies present with equal intensities. It can also be called Thermal noise or Johnson noise.

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