CAIE IGCSE Physics 6.2.3.2 Redshift As an Increase in the Questions

Use this IGCSE Physics objective to explain redshift as an increase in the wavelength of light from receding objects, supported by examined questions and mark schemes.

[Maximum number: 1]

A galaxy is approximately $1.2 \times 10^{26} \mathrm{~m}$ from the Earth.

Scientists observe light from the distant galaxy.

The wavelength of the observed light is longer than the wavelength of the light emitted from the galaxy.

State the name of this effect.

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CAIE IGCSE Physics 6.2.3.2 Redshift As an Increase in the Questions question 1