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1. |
A star is moving away from the earth with a velocity of 100 km/s. If the velocity of light is \[3\times {{10}^{8}}m/s\] then the shift of its spectral line of wavelength\[5700\,\,{AA}\]due to Doppler's effect will be [MP PMT 1994] |
A. | \[0.63\,\,{AA}\] |
B. | \[1.90\,\,{AA}\] |
C. | Carry news |
D. | \[5.70\,\,{AA}\] |
Answer» C. Carry news | |