MCQOPTIONS
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MCQOPTIONS
| 1. |
A rocket is going away from the earth at a speed 0.2c, where c = speed of light. It emits a signal of frequency \[4\times {{10}^{7}}Hz\]. What will be the frequency observed by an observer on the earth [RPMT 1996] |
| A. | \[4\times {{10}^{6}}Hz\] |
| B. | \[3.2\times {{10}^{7}}Hz\] |
| C. | \[3\times {{10}^{6}}Hz\] |
| D. | \[5\times {{10}^{7}}Hz\] |
| Answer» C. \[3\times {{10}^{6}}Hz\] | |