Physics · Optics
एक समतल दर्पण की फोकस दूरी (फोकल लेंथ) ________ होती है।
- 1एक
- 2अनंत✓
- 3वस्तु की दूरी पर निर्भर
- 4शून्य
सही उत्तर देखें
अनंत
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