

MCQOPTIONS
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1. |
A star emitting radiation at a wavelength of \[5000\,{AA}\] is approaching earth with a velocity of\[1.5\times {{10}^{6}}m/s\]. The change in wavelength of the radiation as received on the earth, is [CBSE PMT 1995] |
A. | \[25\,\,{AA}\] |
B. | Zero |
C. | Band absorption spectrum |
D. | \[2.5\,\,{AA}\] |
Answer» B. Zero | |