Physics · Workshop Practice
दो खोखली छड़ों (hollow bars) को 90° के कोण पर जोड़ने के लिए, उनके किनारों को किस कोण पर काटना या घिसना (ग्राइंड करना) पड़ता है?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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45°
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