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एक धात्विक पृष्ठ के लिए देहली आयवृति `6*2 eV` से सम्ब्नधित है और इस पृष्ठ पर आप्पति विकिरण के लिए निरोधी 5V है | आपतित विकिरण जिस श्रेत्र में है वह है ---
A. आवरक्त क्षेत्र
B. दृश्य श्रेत्र
C. X - किरण श्रेत्र
D. पराबैंगनी क्षेत्र

1 Answer

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Best answer
Correct Answer - D
`eV_0 = hu - hv_0`
`rArr" "hu - eV_0 +hV_0 = 5+6*2 = 11*2`
या `(hc)/lamda = 11*2 eV`
`rArr lamda = (hc)/(11*2) = 1108*89` (पराबैंगनी)

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