Physics · Illumination
विभिन्न प्रकाश स्रोतों की कैंडल पावर की तुलना करने के लिए निम्नलिखित में से किस उपकरण का उपयोग किया जाता है?
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- 3बुन्सेन बर्नर
- 4रेडियोमीटर
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