Question

which of the three factors affecting image quality is altered by adjusting the intensity of the light source?

magnification
resolution
contrast

Explanation:

Identify the factors of image quality

In microscopy, three primary factors determine the quality of an image:

1. Magnification: The apparent increase in the size of an object.
2. Resolution: The ability to distinguish two close points as separate entities (detail).
3. Contrast: The difference in light intensity between the specimen and the background.

Analyze the effect of light intensity

Adjusting the intensity of the light source directly changes the amount of light passing through the specimen. This alteration affects how bright the specimen appears relative to its background, which directly alters the contrast of the image. It does not change the physical properties of the lenses (which govern magnification and resolution).

Answer:

• Magnification
• Resolution
• Contrast (Correct answer)