JEE Mains Chemistry Past PapershardMCQ SINGLE

Given below are two statements : Statement-I : According to Bohr’s model of an atom, qualitatively tJEE Mains Chemistry Past Papers Chemistry Question

Question

Given below are two statements : Statement-I : According to Bohr’s model of an atom, qualitatively the magnitude of velocity of electron increases with decrease in positive charges on the nucleus as there is no strong hold on the electron by the nucleus. Statement-II : According to Bohr’s model of an atom, qualitatively the magnitude of velocity of electron increases with decrease in principal quantum number. In the light of the above statements, choose the most appropriate answer from the options gien below : (A) Statement-I is true but Statement-II is false (B) Statement-I is false but Statement-II is true (C) Both Statement-I and Statement-II are false (D) Both Statement-I and Statement-II are true uhps nks dFku fn, gSaA dFku-I : ijek.kq ds cksj ds ekWMy ds vuqlkj bysDVªkWu ds osx dk ifjek.k xq.kkRed :i ls ukfHkd ij /kukos'k ?kVus ds lkFk] c<+rk gS D;ksafd bysDVªkWu ij ukfHkd dk dksbZ izcy ca/ku ugha jgrk gSA dFku-II : ijek.kq ds cksj ds ekWMy ds vuqlkj bysDVªkWu ds osx dk ifjek.k xq.kkRed :i ls eq[; DokUVe la[;k ?kVus ds lkFk c<+rk gSA mijksDr dFkuksa ds lanHkZ esa uhps fn, fodYiksa esa ls lgh mÙkj pqfu,A (1) dFku-I lR; gS ijUrq dFku-II vlR; gSA (2) dFku-I vlR; gS ijUrq dFku-II lR; gSA (3) nksuksa dFku-I rFkk dFku-II vlR; gSA (4) nksuksa dFku-I rFkk dFku-II lR; gSA

Answer: B

💡 Solution & Explanation

Vn = (2.18 × 106) × n Z m/sec ; Vn  n 1 ; n, Vn

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