Question

What objective lens will you use if you want to observe the whole structure of a pollen ?explain your answer.

2.what will you do.if the specimen you are observing under the microscope is blurry?what part of the microscope will you move in order to see the specimen clearly?explain how.
3.you cannot see some of the parts of your specimen in the microscope because of too much brightness .what part of the microscope will you adjust to see part of the specimen ?explain how.

Answer 1

To observe a pollen's entirety, start with a low magnification objective lens and switch to higher ones as needed. For a blurry image, use the coarse adjustment knob for large corrections or the fine adjustment knob for detailed focusing. Adjust the microscope's illumination by changing light intensity, condenser position, or iris diaphragm aperture to resolve issues with too much brightness.

Step-by-step explanation:

When observing the whole structure of a pollen, you would typically start with the lowest magnification objective lens (often 4x or 10x). This allows you to view the entire pollen structure and then zoom in on specific details with higher magnification lenses as needed.

If the specimen appears blurry, you should first check that the slide is properly focused using the coarse adjustment knob for low power objectives and the fine adjustment knob for higher power objectives like the 40x or 100x. These controls allow you to adjust the distance between the objective lens and the specimen for a clear image.

In case of excess brightness obscuring some parts of the specimen, you would adjust the microscope's illumination. This can be modified by varying the light intensity, adjusting the condenser lens position, or changing the iris diaphragm's aperture to reduce direct light intensity and improve contrast.

Answer 2

1. In compound light microscope there can be seen more than 1 objective lenses. The magnifications of those normally would be 4x, 10x, 40x and 100x. To see the whole structure of the specimen you should focus your microscope with the lowest power objective lens which means 4x.

2. If the specimen you are observing under the microscope is blurry, then you should do fine focusing until you get the clear image of the specimen. The fine focus wheel normally is attached to the arm of the microscope.

3. If your specimen in the microscope is too much bright, then you should reduce the brightness until you can see the specimen clearly. The brightness is caused by the light. To control the light you have to adjust the condenser of the microscope.