Morse code is sent by switching a radio signal on and off. If the signal is on for just one second, the corresponding bandwidth or spread of frequencies used by the signal is closest to

(A) 6.28Hz ---- (B) 0.159Hz
(C) 1.00Hz. --- (D) 0.00Hz.

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Questions --- What this question is about

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122.2

Morse code is sent by switching a radio signal on and off. If the signal is on for just one second, the corresponding bandwidth or spread of frequencies used by the signal is closest to

(A) 6.28Hz ---- No.
Time × bandwidth = ?

Try again.

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Questions --- What this question is about

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122.2

Morse code is sent by switching a radio signal on and off. If the signal is on for just one second, the corresponding bandwidth or spread of frequencies used by the signal is closest to

(B) 0.159Hz --- Yes.
Time × bandwidth = 1/(2 pi)

Check the other answers.

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Questions --- What this question is about

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122.2

Morse code is sent by switching a radio signal on and off. If the signal is on for just one second, the corresponding bandwidth or spread of frequencies used by the signal is closest to

(C) 1.00Hz. --- No.
Time × bandwidth = ?

Try again.

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122.2

Morse code is sent by switching a radio signal on and off. If the signal is on for just one second, the corresponding bandwidth or spread of frequencies used by the signal is closest to

(D) 0.00Hz. --- No.
It is not that easy.

Try again.

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Questions --- What this question is about

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122.2