a. Positive x-direction b. Negative x-direction c. Positive z-direction d. None of these 14. A charged particle moving along +ve x-direction with a velocity v enters a region where there is a uniform magnetic field B.(-), from x=0 to x=d. The particle gets deflected at an angle from its initial path. The specific charge of the particle is - dx=d b. Bd vcose v tane . v Bd " Bd C. Bd dr sin e 15. A uniform conducting rectangular loop of sides mass m carrying current i is hanging horizontally with the help of two vertical strings. There exists a uniform horizontal magnetic field B which is parallel to the longer side of loop. The value of tension which is least is mg - Bb b. mg + Bb mg - 2iBb d. mg + 2Bb bani 2 ton 16. A particle of specific charge 9 = C kg- is projected from the origin toward positive x-axis with a velocity niform magnetic field B = -2Â T. The velo- any of particle after time t = 1/12 s will be in ms a. 5[i+13 11 b. 5[3i+ i] c. 51/3i -} 17. In figure thom d. si ti