Which instrument would you use to observe the details of a very small object?

• A. Microscope
• B. Ruler
• C. Beaker
• D. Stopwatch

Answer: (A)

To see details of a very small object, you need an instrument that can magnify and resolve tiny features beyond what the eye can detect. A microscope does exactly that by using lenses and light (or electrons) to enlarge the image and reveal fine structures, such as cells or microstructures.

A ruler measures length but doesn’t magnify or show details inside objects. A beaker is used for holding and measuring liquids, not for observing small features. A stopwatch tracks time, which has nothing to do with examining an object’s details.

So, the tool best suited for observing very small details is a microscope.