Question

Which of the following is used to bring an object into focus?

Question 5 options:


Diaphragm


Revolving nose piece


Coarse adjustment


Objective lens

Answer 1

Course adjustment is a type of knob used to focus and bring the object in the microscope.

Option (c);

EXPLANATION:

• There are different powers of Objective lenses on a microscope.
• The shortest lens is of the lowest power and the longest one is of the largest power.
• We start by rotating the objective lens from the lower power and the coarse adjustment knob is used to focus on the object.
• On both sides of the microscope, we can see this knob and it moves the plate (the place where slides are placed for observation) top to bottom and brings the object into focus.