Answer: Your welcome!
Step-by-step explanation:
To change the magnification using a light microscope, use the coarse adjustment knob to bring the specimen closer or further away from the objective lens. Then, use the fine adjustment knob to fine tune the focus. Once the specimen is close enough to the lens, the image should come into focus. To further increase the magnification, switch to a higher power objective lens by turning the revolving nosepiece. It is important to use the fine adjustment knob to fine tune the focus each time the objective lens is changed.