2. Sample Papers
  3. NEET

NEET Sample Paper NEET Sample Test Paper-56

  • question_answer
    A closed loop PQRS carrying a current is placed in a uniform magnetic field. If the magnetic forces on segments PS, SR and RQ are\[{{\operatorname{F}}_{1}} = 2N\], \[{{\operatorname{F}}_{2}} = 6N and {{F}_{3}}= 3N\]and are in the plane of the paper and along the direction shows, the force on the segment QP is:

    A) 3N                   

    B) 5N   

    C) 4N                   

    D) IN

    Correct Answer: C

    Solution :

    [c] \[{{E}_{1}}=\frac{12400}{975}=12.69eV\] Number of spectral \[lines=\frac{n\,(n-1)}{2}\] \[\Delta \,E=13.60-12.69\] \[\Delta \,E=0.90eV\] \[{{n}^{2}}=\frac{13.6}{\Delta E}=\frac{13.6}{0.9}\] \[{{n}^{2}}=15.8\sim 16\] \[n=4\] Number of spectral line \[=\frac{4\,(4-1)}{2}=6\]


You need to login to perform this action.
You will be redirected in 3 sec spinner