Consider a Young double slit experiment with pinholes at coordinates $(0,0, a)$ and $(0,0,-a)$ and a screen at $y=h$. When a light of wavelength $\lambda$ is used, the shape of the second bright fringe is a hyperbola with eccentricity

• Correct answer
  A

  $a / \lambda$
• B

  $\sqrt{2}$
• C

  $a h / \lambda^2$
• D

  $2 a / \lambda$

Hence, the correct answer is option: 'A'.