एक हाइड्रोजन परमाणु में इलेक्ट्रॉन पहले तीसरी उत्तेजित अवस्था से दूसरी उत्तेजित अवस्था में और तत्पश्चात् दूसरी से प्रथम उत्तेजित अवस्था में जाता है। इन दो संक्रमणों में उत्सर्जित फोटॉनों के संगत तरंगदैर्ध्यो का अनुपात \(\lambda_{1} / \lambda_{2}\) होगा ?

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.