Constellation

Certain characteristic wavelength in the light from a galaxy in the constellation virgo are observed to be increased in wavelength, as compared with terrestrial sources, by about 0.4% . What is the radial speed of this galaxy with respect to earth ? Is it approacing or receding ?

When the light coming form a galaxy in the constellation Ursa Major was spectro graphically anaylised, it was found to contain a line in the calcium absorption spectrum at a wavelenth of 4170Å , the wavelength of same line as observed on the earth is 3970Å . Is the galacy receidng away from us? What is the velocity of recession?

Match items in Column A with one or more items in Column B. {:("Column A","Column B"),((i) "The planet which is", (a) "Star"),(" farthest from the Sun",),((ii) "The planet which", (b) "Earth"),( " appears reddish in colour",), ((iii) "Artificial satellite", (c ) "Orion") , ((iv) "Inner planets", (d) "Mercury") ,((v) "Outer planets", (e )"INSAT"),((vi) "Natural satellite of the Earth", (f)"Neptune"),((vii) "Constellation",(g)"Mars"),((viii) "A celestial body emitting",(h) "Great Bear"),(" heat and light",),( (ix) "Smallest planet in the",(i)"Moon"),(" solar system",),( (x) "Fastest orbiting planet",(j) "Jupiter"):}