Physics · Modern Technology
कलाई घड़ियों, प्रदर्शन युक्तियों (display devices) और पॉकेट कैलकुलेटरों में आमतौर पर किसका उपयोग किया जाता है?
- 1प्रकाश उत्सर्जक पॉलिमर का
- 2द्रव क्रिस्टल (Liquid Crystals) का✓
- 3कैथोड रे ट्यूब का
- 4पाइजोइलेक्ट्रिक क्रिस्टल का
सही उत्तर देखें
द्रव क्रिस्टल (Liquid Crystals) का
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