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Bhupal Nobles' University, Udaipur Convocation | भूपाल नोबल्स विश्वविद्यालय, उदयपुर दीक्षांत समारोह

भूपाल नोबल्स विश्वविद्यालय दीक्षांत समारोह महाराणा प्रताप स्टेशन रोड, सेवाश्रम सर्कल, उदयपुर। भूपाल नोबल्स विश्वविद्यालय उदयपुर द्वारा वर्ष 2018 से 2024 तक की स्नातक एवं स्नातकोत्तर परीक्षा में उत्तीर्ण एवं विद्यावाचस्पति (Ph.D.) उपाधिधारियों के लिए दीक्षान्त समारोह 27 मार्च 2025 गुरूवार को प्रातः 10:30 बजे आयोजित करने का निश्चित हुआ है। दीक्षान्त समारोह में 2020 से 2025 तक की विद्यावाचस्पति की उपाधियों तथा स्नातक एवं स्नातकोत्तर परीक्षाओं में वर्ष 2024 तक प्रथम स्थान प्राप्त करने वाले छात्रों को उपाधि एवं स्वर्ण पदक प्रदान किए जायेंगे। अतः जो उपाधिधारी उक्त समारोह में उपाधि प्राप्त करने के इच्छुक हों, वे समारोह में उपस्थित होने की लिखित सूचना के साथ स्नातक एवं स्नातकोत्तर प्रथम वरीयता प्राप्त छात्रों हेतु, पंजीकरण शुल्क ₹500 व उपाधि शुल्क ₹5000 (कुल ₹5500) एवं विद्यावाचस्पति (Ph.D.), शोधार्थी पंजीकरण शुल्क ₹500 व उपाधि शुल्क ₹5000 (कुल ₹5500) नकद अथवा डिमाण्ड ड्राफ्ट भूपाल नोबल्स विश्वविद्यालय, उदयपुर के नाम बनाकर कुलसचिव, भूपाल नोबल्स विश्वविद्यालय, उदयपुर को दिनांक 17.03.2025 तक ...
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Moseley’s law | Atomic and Molecular physics

Moseley’s law

  • According to it, the frequency of a spectral line in X-ray spectrum varies as the square of the atomic number of the element emitting it.
  • If 𝜈 is the frequency of spectral line in X-ray spectra and Z is the atomic number of element, then
  • 𝜈 = Z2 ⇒ √𝜈 ∝ Z
  • or √𝜈 = a (Z– b)
  • Here (Z –b) is the effective atomic number of emitting element and b is the characteristic constant or screening constant.

Importance of Moseley’s law

  • The characteristic property of an element depends on their atomic number, not on their masses.
  • So the position of some elements in periodic table was rearranged.
  • On the basis of Moseley law some new elements of periodic table was discovered like Hf (72), In (61), Re (75) etc.

Explanation of Moseley’s law on the basis of Bohr’s theory

  • The energy of electron in n1 and n2 orbits are given by

  • Since the positive nucleus is screened by rest of the electrons.
  • Therefore we use atomic number (Z– b) in place of Z.

  • If Z is very large, b1 ≈ b2 ≈ b

  • For Kα line, n1 = 2 and n2 = 1

  • For Kα line, a = 3Rc/4 and b = 1
  • Here R is Rydberg’s constant, and c is velocity of light.
To know more about Moseley's law please click on the link for English and click on the link for Hindi
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