VIT Engineering VIT Engineering Solved Paper-2014

  • question_answer
    If  \[\left| z+4 \right|\le 3,\] then the greatest and the least value of |z + 1| are

    A) -1, 6                                      

    B) 6, 0

    C) 6, 3                                        

    D) None of these

    Correct Answer: B

    Solution :

    We have, \[=2.35\times {{10}^{-2}}m\] \[r=2.35m\]               \[L=\frac{{{\mu }_{r}}.{{\mu }_{0}}{{N}^{2}}A}{l}\] \[=\frac{600\times 4\pi \times {{10}^{-7}}\times {{\left( 2000 \right)}^{2}}\times \left( 1.5 \right)\times {{10}^{-4}}}{0.3}\]               \[2C+3{{H}_{2}}\to {{C}_{2}}{{H}_{6}};\Delta H=-21.1\] \[C+OL2\to C{{O}_{2}};\Delta H=-94.1\]                \[{{H}_{2}}+\frac{1}{2}{{O}_{2}}\to {{H}_{2}}O;\Delta H=-68.3\] Hence, the greatest and least value are 6 and 0.


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