MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
| 1. |
In hydrogen spectrum the wavelength of \[{{H}_{\alpha }}\] line is 656 nm, whereas in the spectrum of a distant galaxy, \[{{H}_{\alpha }}\] line wavelength is 706 nm. Estimated speed of the galaxy with respect to earth is, |
| A. | \[2\times {{10}^{8}}m/s\] |
| B. | \[2\times {{10}^{7}}m/s\] |
| C. | \[2\times {{10}^{6}}m/s\] |
| D. | \[2\times {{10}^{5}}m/s\] |
| Answer» C. \[2\times {{10}^{6}}m/s\] | |