Physics 9702 · AS & A Level · Standard candles

Standard candles — practice question

(a)[2]

State Wien’s displacement law, and identify each symbol that you use.

(b(i))[1]

State the meaning of a standard candle.

(b(ii))[1]

State the cause of the radiation from the star being redshifted.

(b(iii))[4]

The true values of the quantities observed or estimated are those that are corrected to allow for redshift. However, the student does not correct for redshift. By placing one tick (✓) in each row, complete Table 10.1 to show how the student’s observations and estimates compare with the true values.

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: Temperature varies inversely with wavelength

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