समझने के तत्व और सूत्रों का हिंदी संस्करण
2 : थिन लेंसेस
- लेंस का सूत्र: $$(\frac{1}{f} = \frac{1}{v} - \frac{1}{u}).$$
- विस्तारण (M): $$(M = -\frac{v}{u}).$$
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