Question

(a) How does moving the objective lens from 6.00 mm to 5.00 mm from an object affect the magnification of the microscope?

a) Increases
b) Decreases
c) Remains the same
d) Insufficient information
(b) When the objective lens is moved closer to the object, what happens to the magnification?
a) Increases
b) Decreases
c) Remains the same
d) Insufficient information
(c) If the objective lens is moved from 6 mm to 7 mm from the object, what will likely happen to the magnification?
a) Increases
b) Decreases
c) Remains the same
d) Insufficient information
(d) What indicates whether the image is upright or inverted?
a) The objective lens
b) The eyepiece
c) The distance between lenses
d) Insufficient information

Answer 1

Adjusting the distance between the objective lens and the object affects the magnification of a microscope; moving closer increases magnification while moving away decreases it. The image orientation, as upright or inverted, is determined by the system's optics.

Step-by-step explanation:

Effects of Objective Lens Movement on Microscope Magnification

When working with a microscope, adjustments to the position of the objective lens can significantly affect the magnification of the viewed object. Let's explore how the magnification changes in different scenarios:

• (a) Moving the objective lens from 6.00 mm to 5.00 mm from an object would increase the magnification, as the microscope system is effectively lengthened.
• (b) When the objective lens is moved closer to the object, the magnification increases.
• (c) Conversely, moving the objective lens from 6 mm to 7 mm from the object would likely decrease the magnification given that the overall tube length of the microscope is shortened in this case.
• (d) The image being upright or inverted in a microscope is determined by the optics of the system, which traditionally results in an inverted image. In the case of a compound microscope, both the objective lens and the eyepiece contribute to the final image orientation.

Adjusting the focal distance, or the distance between the objective lens and the object, modifies the magnification ability of a microscope. This is a key concept for anyone studying the physics of optical instruments or working in fields that regularly employ microscopy.