Please answer in very clear handwriting or typing. Thank you! 3. In a bright-fie
ID: 1656547 • Letter: P
Question
Please answer in very clear handwriting or typing. Thank you!
3. In a bright-field compound microscope, starting from the illuminator, follow the pathway of light: a. The first lens that provides magnification of the image is the b. The lens that further enlarges the image ten more times is the lens. lens. 4. Open the iris diaphragm all the way while using the low power objective. What happens to the field of view and the quality of the image? Now close the iris diaphragm all the way. What happens to the field of view and the image? Why should you always begin with scanning or low power objective? And why you should not begin with high-dry lens? 5.Explanation / Answer
3. in the bright field compound microscope
a. the first lens that provides image magnification is the objective lens
b. the second lens providing 10x magnification further is the Eyepiece lens
4. opening iris diaphragm to maximum value increases field of view, while decreasing the amount of light per unit field of view, hence reducing image quality
closing iris diaphragm to minimum value decreases field of view, while increasing the amount of light per unit field of view, hence enhancing image quality
5. always start with low power objective as it has less image distortion and gives a rough idea of required further magnification to view things in a balance with field of view and image quality