Physics · Optics
उत्तल लेंस की क्षमता होती है:
- 1धनात्मक या ऋणात्मक हो सकती है
- 2शून्य
- 3सदैव ऋणात्मक
- 4सदैव धनात्मक✓
सही उत्तर देखें
सदैव धनात्मक
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