Question

Two points monochromatic and coherent sources of light of wavelength $\lambda$ are placed on the dotted line in from of a large screen. The source emit wave in phase with each other . The distance between $S_{1}and{S}_2$ is 'd' while their distance from the screen is much larger. Then :

• A. $\to Ifd=7\lambda /2,Owillbeminima$
• B. $\to Ifd=4.3\lambda ,therewillbeatotalof8minimaonyaxis.$
• C. $\to Ifd=7\lambda ,Owillbeamaxima.$
• D. $\to Ifd=\lambda ,therewillbeonlyonemaximaonthescreen.$

Answer 1

Answer: (A), (C), (D)

The correct options are
A $\to Ifd=7\lambda /2,Owillbeminima$
C $\to Ifd=7\lambda ,Owillbeamaxima.$
D $\to Ifd=\lambda ,therewillbeonlyonemaximaonthescreen.$