Question

In a double slit experiment, when light of wavelength $400 nm$ was used, the angular width of the first minima formed on a screen placed $1 m$ away, was found to be $0.2°$. What will be the angular width of the first minima, if the entire experimental apparatus is immersed in water? (\mu_{water}$$=\frac43)

• A. 0.266°
• B. 0.15°
• C. 0.05°
• D. 0.1°

Answer 1

Answer: (B)

0.15°

Answer 2

The correct option is (B) : 0.15°