{"id":7637,"date":"2024-02-23T07:42:50","date_gmt":"2024-02-23T02:12:50","guid":{"rendered":"https:\/\/www.aplustopper.com\/?p=7637"},"modified":"2024-02-23T15:56:02","modified_gmt":"2024-02-23T10:26:02","slug":"thermionic-emission-radio-activity-icse-solutions-for-class-10-physics","status":"publish","type":"post","link":"https:\/\/www.aplustopper.com\/thermionic-emission-radio-activity-icse-solutions-for-class-10-physics\/","title":{"rendered":"ICSE Solutions for Class 10 Physics – Thermionic Emission and Radioactivity"},"content":{"rendered":"
ICSE Solutions<\/a>Selina ICSE Solutions<\/a><\/p>\n APlusTopper.com provides ICSE Solutions for Class 10 Physics Chapter 11 Thermionic Emission and Radioactivity for ICSE Board Examinations. We provide step by step Solutions for ICSE Physics Class 10 Solutions Pdf.\u00a0You can download the Class 10 Physics ICSE Textbook Solutions with Free PDF download option.<\/p>\n Download Formulae Handbook For ICSE Class 9 and 10<\/a><\/p>\n Question 1:<\/strong> Define bound electrons. Question 2:<\/strong> Define free electrons. Question 3:<\/strong> Define atomic number of an element. Question 4:<\/strong> Define mass number of an element. <\/p>\n Question 5:<\/strong> What are isotopes<\/a>? Give examples.Short Answers<\/strong><\/span><\/h3>\n
\nAnswer:<\/strong> As nucleus is positively charged it strongly attracts the negative charged electrons. The electron orbit close to the nucleus are tightly bound by strong attractive force of nucleus. These electrons are known as bound electrons.<\/p>\n
\nAnswer:<\/strong> Electrons in outer orbits are weakly bound with the nucleus. In solids these weakly bound electrons leave their individual atom and become a part of it. These electrons are known as free electrons.<\/p>\n
\nAnswer:<\/strong> The number of protons in the nucleus is known as the atomic number of the element and is denoted by Z.<\/p>\n
\nAnswer:<\/strong> The total number of neutrons and protons in the nucleus is called the mass number of the element and is denoted by A.<\/p>\n
\nAnswer:<\/strong> The atoms of same element which have same atomic number but different mass number are called isotopes. Examples: Protium, Deuterium, Tritium.<\/p>\n