Physics · Illumination
एक हैलोजन लैंप का सामान्य औसत जीवनकाल (lifespan) कितना होता है?
- 1100 - 300 घंटे
- 22000 - 3500 घंटे✓
- 31000 - 1200 घंटे
- 4500 - 800 घंटे
सही उत्तर देखें
2000 - 3500 घंटे
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