question_answer

Two coherent light beams of intensities \[I\] and\[4I\]are superposed. The maximum and minimum possible intensities in the resulting beam are

A)  \[5I\] and \[I\]                 

B)         \[5I\] and \[3I\]

C)         \[9I\] and \[I\]                 

D)         \[9I\] and \[3I\]