Question

question 19
1 point
which of the following statements is incorrect about microscope use?
more light is necessary when using the scanning objective.
when using the coarse adjustment, the objective should not touch the slide
the compound microscope consists of a two - lens system
the low power objective has a greater magnification than the scanning objective.
clear selection
question 20
1 point
which magnification has the greatest field of vision?
4x
10x
40x
100x

Explanation:

For Question 19:

• Scanning objectives have low magnification, so they need less light; higher magnification objectives need more light. The other statements are correct: coarse adjustment must avoid hitting the slide, compound microscopes use two lens systems (ocular and objective), and low power objectives (e.g., 10x) have higher magnification than scanning objectives (e.g., 4x).

For Question 20:
Field of vision (the area visible through the microscope) is inversely related to magnification. Lower magnification means a wider, larger field of view, while higher magnification narrows the visible area. 4x is the lowest magnification listed.

Answer:

Question 19: More light is necessary when using the scanning objective.
Question 20: 4x