Hubble's law is expressed as [v= speed of recession, r=distance r of galaxy, H=Hubble constant]

Hubble's law is related with

Hubble's law is related with

Dimensions of Hubble's constant are

Hubble constant is rate of

Hubble constant is rate of

When the light emitted by a distant galaxy is spectrographically analysed, it is found to contain the characteristic patterns of radiation emitted by famoliar elements, but their wavelength show a red shift of 2% . How fast is the galaxy receding away from us? Using Hubble's law estimate the distance of galaxy in light year. Take Hubble's constant H=17kms^(-1) for every million light year.

The dimensions of Hubble's constant are :

According to Hubble's law, the redshift (Z) of a receding galaxy and its distance r from earth are related as

According to Hubble's law, the redshift (Z) of a receding galaxy and its distance r from earth are related as