MCQOPTIONS
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| 1. |
A big explosion on the moon cannot be heard on the earth because [CPMT 1972; AFMC 2005] |
| A. | The explosion produces high frequency sound waves which are inaudible |
| B. | Sound waves required a material medium for propagation |
| C. | Sound waves are absorbed in the moon's atmosphere |
| D. | Sound waves are absorbed in the earth's atmosphere |
| Answer» C. Sound waves are absorbed in the moon's atmosphere | |