PRE BOARD -1 (2024 -25) Time:3 Hrs. General Instructions: 1. There are 33 questions in all. Section A, Section B, Section 2. Section A contains sixteen All questions are compulsory. This question paper has five sections: C, Section D and Section E. All the sections are compulsory. MCQ of 1 mark each, Section B contains five questions of two marks each, Section C contains seven questions of three marks each, section D contains three long questions of five marks each and Section E contains tw0 case study based questions of 4 marks each. 3. There is no overall choice. However, an internal choice has been provided in section C, and D. You have to attempt only one of the choices in such questions. 4. Use of calculators is not allowed. You may use the following values of physical constants wherever necessary. c=3 x 10 ms h= 6.63 x 10-34Js e=1.6 x 10-9 C uo = 47 x 10? Tm lA V(4ra) =9 x 10' Nm' C2 m, mass of electron =9.] x 103 kg E0 = 8.854 x 10-12 CmN mass of neutron =1.675 x 10-" kg mass ofproton = 1.673 x 1o-2" kg Avogadro's number = 6.023 x 10