2. Solved Papers
  3. BCECE Medical

BCECE Medical BCECE Medical Solved Papers-2009

  • question_answer
    An object is placed at the focus of a convex mirror. If its focal length is 20 cm, the distance of mirror is

    A)  10 cm           

    B)  20 cm

    C)  40 cm          

    D)  None of these

    Correct Answer: A

    Solution :

    \[f\] is \[+ve\] for convex mirror. Therefore, for convex mirror                 \[\frac{1}{v}-\frac{1}{20}=+\frac{1}{20}\]                 \[\frac{1}{v}=\frac{1}{10}\] or \[v=10\,cm\]


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