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Cambridge IGCSE Combined Science practice

Paper 4 structured question: Electromagnetic spectrum

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Attempt questionElectromagnetic spectrum revisionRevise the key idea

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Electromagnetic spectrum

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Paper 4Theory (Extended)3 marks

The speed of electromagnetic waves is a key concept in physics.

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Electromagnetic Wave Speed

In a vacuum, electromagnetic waves travel at a speed of 3.0 × 10^8 m/s. This speed is fundamental to the study of physics and wave behavior.

  1. a

    Describe how the speed of electromagnetic waves affects their behavior in different media.

    Aim for approximately 3 distinct marking points.

    [3]

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Paper 4 structured question: Electromagnetic spectrum

Paper 4Theory (Extended)2 marks

Description

Speed of Electromagnetic Waves

Electromagnetic waves travel at a speed of 3.0 × 10^8 m/s in a vacuum. This speed is a fundamental constant in physics and is essential for understanding wave behavior.

  1. a

    Explain the significance of the speed of electromagnetic waves in a vacuum.

    Aim for approximately 2 distinct marking points.

    [2]