Q

The measure of an image's clarity is called _________, whereas _________ is the brightness difference between object parts.

RRB Group D 14 Aug, 2026 (9:00 AM - 10:30 AM) 2026
✓ Answer: C resolution, contrast
The correct choice is resolution, contrast. It follows from the laws of reflection/refraction and the standard image-formation properties of lenses, mirrors or optical systems.
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