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What is the effect of increasing the number of sits on the intensity of Central maxima of diffraction pattern of a diffraction grating?

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What is the effect of increasing the number of sits on the intensity of Central maxima of diffraction pattern of a diffraction grating? Answer: Intensity of central maxima will increase

In a diffraction grating, the intensity of maxima is proportional to the square of the number of slits. Increasing the number of slits makes the central maxima brighter and sharper.

Question context

This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.