Green laser light on a double slit, creating a pattern of bright and spots on a

Question

Green laser light on a double slit, creating a pattern of bright and spots on a screen some distance away. Which of the following changes, carried out separately, would increase the distance between the bright spots on the screen? (Select all that apply.) Replace the green laser with a blue laser. Immerse the entire apparatus water. Decrease the distance between the double slit and the screen. Replace the green laser with a red laser. Decrease the spacing between the slits. Increase the spacing between the slits. Increase the distance between the double slit and the screen.

Explanation / Answer

y = m ? L/d

so Replace the green laser with a red laser. since bigger wavelength

Decrease the spacing between the slits.

Increase the distance between the double slit and the screen.

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