Physics · Sound
उद्योगों में पराध्वनि (अल्ट्रासाउंड) का अनुप्रयोग निम्नलिखित में से कौन सा है?
Verified Solution4 OptionsUpdated: October 2026
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Physics · Sound
सही उत्तर देखें
धातु के ब्लॉकों में दरारों और दोषों का पता लगाना
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