microscope 1

Which part(s) of the microscope control the brightness of the image?

(1) eyepiece (2) mirror (3) diaphragm

• (3) only

• (1) and (2) only

• (1) and (3) only

• (2) and (3) only

Which parts of the microscope are responsible for the magnification of the image?

(1) condenser (2) objective (3) mirror (4) eyepiece

• (2) and (4) only

• (1), (2) and (4) only

• (2), (3) and (4) only

• (1), (2), (3) and (4) only

When observing the specimen with 5x eyepiece and 10x objective, the total magnification of the microscope would be

• 5x

• 10x

• 15x

• 50x

Which of the following cannot be observed under light microscope?

• Amoeba

• Red blood cells

• Chloroplasts

• Mitochondrion

In order to obtain a sharp image, which parts of the microscope should be adjusted?

• P and S only

• P, S and W only

• R and W only

• Q, R and W only

When the word “box” is viewed under the microscope, which of the following can be seen?

• box

• pox

• xop

• xoq

Which of the following is a correct step for using the microscope?

• Use the coarse adjustment knob for focusing under high power.

• Reduce the light intensity for observation under high power.

• Close one eye when observing the specimen under the microscope.

• Position the specimen to the centre of the field of view before changing to a higher magnification.