2. Solved Papers
  3. VMMC

VMMC VMMC Medical Solved Paper-2009

  • question_answer
    Let A = light obtained by stimulated emission and B = light obtained by spontaneous emission, then

    A)  A is incoherent, B is incoherent

    B)                         A is incoherent, B is coherent

    C)                         A is coherent, B is coherent

    D)                         A is coherent, B is incoherent

    Correct Answer: D

    Solution :

    A laser is a device that emits light through a process called stimulated emission. Laser emission light is usually spatially coherent.  Light obtained by spontaneous emission is incoherent in nature.


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