Physics · Scientific Instruments
डेंसिटोमीटर (Densitometer) का उपयोग क्या मापने के लिए किया जाता है?
- 1छोटी फिल्म को बड़ा करना
- 2यांत्रिक शक्ति मापना
- 3कोण मापना
- 4पदार्थ का प्रकाशिक घनत्व✓
सही उत्तर देखें
पदार्थ का प्रकाशिक घनत्व
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