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Cambridge IGCSE Physics practice

Paper 4 structured question: Radiation

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Radiation

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Paper 4Theory (Extended)1 marks

Understanding the factors affecting radiation emission is crucial in thermal physics.

Description

Factors Affecting Radiation Emission

An object emits radiation based on its surface temperature and surface area. Higher temperatures lead to increased radiation emission, while larger surface areas also enhance this effect.

  1. a

    State the relationship between surface temperature and radiation emission.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 4 structured question: Radiation

Paper 4Theory (Extended)3 marks

Description

Thermal Radiation

An object with a higher surface area and temperature will emit more radiation than one with a lower surface area and temperature.

  1. a

    Describe how surface area and temperature affect the rate of radiation emission.

    Aim for approximately 3 distinct marking points.

    [3]