The `6563 Å H_(2)` line emitted by hydrogen in a star is found to be red shifted by `15 Å`. Estimate the speed with which the star is receding from ea

The `6563 Å H_(2)` line emitted by hydrogen in a star is found to be red shifted by `15 Å`. Estimate the speed with which the star is receding from ea
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The `6563 Å H_(2)` line emitted by hydrogen in a star is found to be red shifted by `15 ... the speed with which the star is receding from earth.
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