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Low frequency noise is ________

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Low frequency noise is ________

(a) Flicker noise

(b) Shot noise

(c) Thermal noise

(d) Partition Noise

I have been asked this question during an interview.

This intriguing question originated from Channel topic in division Elements of Communication System of Analog Communications

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Correct choice is (a) Flicker noise

To explain: Flicker noise is a type of electronic noise which is generated due to fluctuations in the density of carrier. It’s also known as 1/f as it’s power spectral density increases with a decrease in frequency or increase in offset from a signal.

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