MCQOPTIONS
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MCQOPTIONS
| 1. |
A person is standing at a distance \[D\] from an isotropic point source of sound. He walks 50.0 m towards the source and observes that the intensity of the sound has doubled. His initial distance \[D\] from the source is |
| A. | \[50\sqrt{2}m\] |
| B. | \[\frac{50\sqrt{2}}{\sqrt{2}-1}m\] |
| C. | \[\frac{50}{\sqrt{2}-1}m\] |
| D. | \[100\sqrt{2}m\] |
| Answer» C. \[\frac{50}{\sqrt{2}-1}m\] | |