Question

S The various spectral lines observed in the light from a distant quasar have longer wavelengths λn' than the wavelengths λ m measured in light from a stationary source. Here n is an index taking different values for different spectral lines. The fractional change in wavelength toward the red is the same for all spectral lines. That is, the Doppler redshift parameter Z defined byZ=λn' - λn / λnis common to all spectral lines for one object. In terms of Z , use Hubble's law to determine (a) the speed of recession of the quasar.

Answer 1

From Hubble's law redshift is directly propositional to it's  ⇒ Z=$H_{0}$D

What does the Red shift parameter mean?

• A redshift in physics is an increase in the wavelength of electromagnetic radiation, with a corresponding decrease in frequency and photon energy (such as light).
• A negative redshift, or blueshift, is when the wavelength decreases while the frequency and energy increase simultaneously.

Given,

Z=λ'ₙ-λₙ/λₙ,

Z = Doppler Redshift paraméter

λ'ₙ-λₙ= wavelengths at particular distance

Hubble's low states that "a galaxy's velocity is directly proportional to it's distance."

It can be formulated as

V=$H_{0}$D

D= proper distance

$H_{0}$= Hubble's constant V-secessional velocity

To learn more about Red shift parameter refer to

brainly.com/question/16002818

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