In a single slit experiment, a diffraction pattern is obtained on the screen for yellow light. What will be the effect on the diffraction pattern, if yellow light is replaced by X-rays?

diffraction pattern will not be observed

Answer: ☀ diffraction pattern will not be observed

Explanation: X-rays have a very small wavelength compared to the slit width, so diffraction effects are negligible and no visible diffraction pattern will be observed.