Question

Coherent green light shines on a double slit with spacing 241um. This results in a diffraction pattern consisting of a central maximum and several lines to either side. When the green light is replaced with red light, the distance between the central maximum and the next line
O Becomes closer
O Becomes brighter
O Becomes dimmer
O None of the above
O Becomes greater

Answer 1

Answer:

Becomes greater

Explanation:

Distance between the central maxima and the next line increase with the wavelength i.e.

$d =\frac{3 \lambda L}{2a}$

As, the wavelength of the red light is greater than the wavelength of the green light, thus, the distance between  the central maxima and the next line becomes greater.

Option 5 is correct.