A) वटवाघुळापासूनच्या अल्ट्रासोनिक लहरींच्या परावर्तनामुळे
B) दूरच्या वस्तूंपासूनच्या अल्ट्रासोनिक लहरींच्या परावर्तनामुळे
C) वटवाघुळापासूनच्या सुपरसोनिक लहरींच्या परावर्तनामुळे
D) दूरच्या वस्तूंपासूनच्या सुपरसोनिक लहरींच्या परावर्तनामुळे
योग्य उत्तर: A
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BETA
