Question

Write any two advantages of a compound microscope over a simple microscope. Draw a ray diagram for the image formation at the near point by a compound microscope and explain it.

Hint:

A compound microscope offers higher magnification and better resolution by using two lenses to form and further magnify the image.

Answer 1

Compound Microscope

A compound microscope utilizes two lenses: the objective lens and the eyepiece lens.

The objective lens generates a real, inverted image of the specimen at a short range. This intermediate image is then magnified by the eyepiece to produce the final image.

Advantages of a Compound Microscope over a Simple Microscope:

1. Greater Magnification: The combined action of the objective and eyepiece lenses in a compound microscope yields significantly higher magnification compared to a simple microscope, which typically uses a single lens.
2. Enhanced Clarity and Resolution: With its multiple lenses, a compound microscope provides superior resolution, allowing for the observation of finer details than a simple microscope is capable of.
   

Diagram Explanation:

• The specimen is positioned at a distance less than the focal length of the objective lens, resulting in the formation of an intermediate real image.
• This intermediate image serves as the object for the eyepiece lens, which further magnifies it.
• The final image is viewed at the eye's near point.