Answer;
The effect would have greater result and better resolution
Step-by-step explanation;
-Diffraction grating is a thin film of clear glass or plastic that has a large number of lines per (mm) drawn on it. When light from a bright and small source passes through a diffraction grating, it generates a large number of sources at the grating. The very thin space between every two adjacent lines of the grating becomes an independent source.
-If the number of slits in an obstacle is large the sharpness of the pattern is improved, the maxima getting narrower. Obstacles with a large number of slits (more than, say, 20 to the millimetre) are called diffraction gratings.