[单选题]
Estimate the observed wavelength forcxab+gi(uz6sk:c5- /e2 b.e xkj;vto the 656 nm line/d+ jg 1qcz fw;qtt1rfg o* ,b6w(lk,q in the spectrum of a star which is 100 million light-years from uswr,*zg, f dlbtqotwqc6;1/1 (g +jqfk.
A. $653 \; nm$
B. $656 \; nm$
C. $659 \; nm$
D. $692 \; nm$
Post time 2024-1-22 00:41:59