When a light ray passes through a small opening, the longer wave length of the red colour as compared to shorter wavelength of violet colour will

Explanation

When a light ray passes through a small opening, it undergoes a phenomenon known as diffraction. Diffraction occurs when a wave encounters an obstacle or passes through a narrow aperture, causing it to bend or spread out. The extent of diffraction depends on the wavelength of the light. In this case, the longer wavelength of the red color compared to the shorter wavelength of the violet color means that the red light will diffract more than the violet light. This is because longer wavelengths tend to diffract or spread out more than shorter wavelengths when passing through a small opening.