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JEE Main 4 August 2021, Shift 2, Physics Q30

Question 30 of 90 in this shift, Physics question 30 of 30, Section B.

In the Bohr’s atomic model, second energy state potential energy of hydrogen is (–E). the kinetic energy of electron in the first energy state will be ______E.

Official answer

NTA final key.

Chapter: Atoms
Topic: Bohr's Atomic Model
Idea tested: Energy Ratios in Bohr Orbits

Same idea in other shifts

Asked 5× in all

5 Apr 2024, Shift 1 · Q48An electron rotates in a circle around a nucleus having positive charge Ze. Correct relation between total energy (E) of electron to its…EasySingle correct
30 Jan 2024, Shift 1 · Q47The ratio of the magnitude of the kinetic energy to the potential energy of an electron in the $5^{\mathrm{th}}$ excited state of a…EasySingle correct
24 Jun 2022, Shift 2 · Q50In Bohr’s atomic model of hydrogen, let K, P and E are the kinetic energy, potential energy and total energy of the electron respectively.…EasySingle correct
4 Aug 2021, Shift 2 · Q2For an electron orbiting around the nucleus in a hydrogen like atom with atomic number Z; T, U and E denote the kinetic, potential and…MediumOther

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.