Question

In Young's experiment of double slit, the number of times the intensity of the central bright band greater than the individual intensity of the interfering waves :

• A. $2$
• B. $4$
• C. $6$
• D. $16$

Answer 1

The correct option is B $4$

In YDSE. if intensity of interfering waves are I
Then $I_{max}=I+I+2\sqrt{II}$
$=2I+2I$
$=4I.$
So, intensity of central bright band is 4 times of individual intensity.