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Cambridge IGCSE Physics practice

Paper 4 structured question: Electromagnetic spectrum

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4

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1

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Electromagnetic spectrum

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Paper 4Theory (Extended)1 marks

Sound transmission in communication systems.

Description

Types of Sound Signals

Sound can be transmitted as either digital or analogue signals. Digital signals represent sound in binary form, while analogue signals maintain the original wave form.

  1. a

    State the two types of signals used for sound transmission.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 4 structured question: Electromagnetic spectrum

Paper 4Theory (Extended)1 marks

Description

Digital vs Analogue Signals

Digital signals are less prone to degradation and can be easily manipulated, while analogue signals are straightforward but can lose quality over distance.

  1. a

    State one advantage of digital signals over analogue signals.

    Aim for approximately 1 distinct marking point.

    [1]