Physics · Physics
निम्नलिखित में से कौन सा उल्ट्रासोनिक तरंगों का उपयोग नहीं है?
- 1दृश्टि भ्रम✓
- 2घेंघा रोग का उपचार
- 3समुद्र की गहराई का पता लगाना
- 4संकेत भेजना
सही उत्तर देखें
दृश्टि भ्रम
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