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CONTINUOUS ASSESSMENT - II Academic Year Class Maximum Marks Duration Month Subject : : : : : : 2020 2021 12 25 1 hour October Physics Subject Teacher e-mail: binoy.shomeonlineexam@gmail.com PHYSICS (Candidates are allowed to write between 8:00 Am -8:50 am Last 10 minutes are to upload the answer script / answers on the mail Id) Answer all questions in Section -A and Section - B The intended marks for questions or part of questions are given in brackets [ ]. Additional instructions as the per the subject requirement. Section-A Answer all questions. Question 1 (A) Choose the correct alternative (a), (b), (c) or (d) for each of the questions given below: (i) (ii) [ 2 1] The magnetic dipole moment of a current carrying coil does not depend upon (a) number of turns of the coil. (b) cross-sectional area of the coil. (c) current flowing in the coil. (d) material of the turns of the coil. When a charged particle is projected perpendicular to a uniform magnetic field, it describes a circular path in which. (B) (a) its speed remains constant. (b) its velocity remains constant. (c) its momentum remains constant. (d) its kinetic energy increases. Answer the following questions briefly and to the point. (i) [3 1] A particle of mass m and charge q moving with velocity v enters the region of uniform magnetic field at right angle to the direction of its motion. How does its kinetic energy get affected? This paper consists of 4 printed pages. Turn Over
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