Physics · Thermal Properties of Matter
सभी तापमानों पर दो छड़ों A और B की लंबाई में अंतर 60 cm है। यदि रेखीय प्रसार गुणांक αA = 18 × 10-6/°C और αB = 27 × 10-6/°C हैं, तो दोनों छड़ों की प्रारंभिक लंबाई ज्ञात कीजिए।
- 1lA = 120 cm, lB = 60 cm
- 2lA = 160 cm, lB = 100 cm
- 3lA = 180 cm, lB = 120 cm✓
- 4lA = 200 cm, lB = 140 cm
सही उत्तर देखें
lA = 180 cm, lB = 120 cm
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