2. Sample Papers
  3. JEE Main & Advanced

JEE Main & Advanced Sample Paper JEE Main Sample Paper-9

  • question_answer
    If the ratio of change in current in emitter and corresponding change in collector current is 1.013, then the value of \[\beta \] is

    A)  0.987                   

    B)  75.92   

    C)  1.006                   

    D)  79.68

    Correct Answer: B

    Solution :

    \[\beta =\frac{\alpha }{1-\alpha }\And \alpha =\frac{\Delta {{l}_{c}}}{\Delta {{l}_{E}}}\] \[\alpha =\frac{\Delta {{l}_{c}}}{\Delta {{l}_{E}}}=\frac{1}{1013}=0.987\]\[\beta =75.92\]


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