2. Sample Papers
  3. NEET

NEET Sample Paper NEET Sample Test Paper-49

  • question_answer
    If the length of a cylinder on heating increases by \[2%\], the area of its base will increases by-

    A) \[0.5\,%\]                      

    B) \[1\,%\]

    C) \[2\,%\]                         

    D) \[4\,%\]

    Correct Answer: D

    Solution :

    \[\frac{\Delta A}{A}\,\times \,100\,\,=\,\,\beta \Delta T\,\times \,100\] \[=\,\,\,2\,\alpha \,\Delta \,T\,\,\times \,\,100\] \[=\,\,2\left( \frac{\Delta \ell }{\ell }\times 100 \right)\,\,=\,\,4\,%\]


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