Recently Physicists, calculated the electrons dipole moment which is almost 2.2 times more accurate than the previously measured. Actually they have measured the dipole moment with a precision of 0.13 parts per billion. Here the first question is what exactly the dipole moment is and how it is calculated specially for electrons. We all know, electrons revolves around the positively charged nucleus with a uniform velocity (again uniformity of velocity may be a prediction only). Let me here clear it, why I’m saying this, you know none of the scientist or physicists have ever seen an electron. As per magnetic theory in a current carrying conductor, there will be a magnetic field around a straight current carrying conductor and also in a circular current carrying conductor. I think a common man who knows little about electrons and current, he or she definitely know that rate of flow of electrons is nothing but a current in a conductor. After knowing the definition of current, let m
General Instructions: (1) There are 35 questions in all. All questions are compulsory (2) This question paper has five sections: Section A, Section B, Section C, Section D and Section E. All the sections are compulsory. (3) Section A contains eighteen MCQ of 1 mark each, Section B contains seven questions of two marks each, Section C contains five questions of three marks each, section D contains three long questions of five marks each and Section E contains two case study based questions of 4 marks each. (4) There is no overall choice. However, an internal choice has been provided in section B, C, D and E. You have to attempt only one of the choices in such questions. 5. Use of calculators is not allowed. SECTION A 1. There are two Vernier Callipers both of which have 1 cm divided into 10 equal divisions on the main scale as shown in fig. The measure values (in cm) by calliper C 1 and C 2 , respectively are a. 2.87 and 2.86