A. fluorescent
B. phosphorescent
C. transparent
D. opaque
A. Girolamo Fracastoro
B. Zaccharias Janssen
C. Antonie van Leeuwenhoek
D. Robert Hooke
Paramecium?
a. a brightfield microscope with a stain
b. a brightfield microscope without a stain
c. a darkfield microscope
d. a transmission electron microscope
a. a transmission electron microscope
b. a scanning electron microscopes
c. a phase-contrast microscope
d. a confocal scanning laser microscope
e. an atomic force microscope
cell?
a. a transmission electron microscope
b. a scanning electron microscope
c. a brightfield microscope
d. a darkfield microscope
e. a phase-contrast microscope
A. light with a long wavelength
B. light with an intermediate wavelength
C. light with a short wavelength
D. It is impossible to tell from the information given.
A. Hans Janssen
B. Zaccharias Janssen
C. Antonie van Leeuwenhoek
D. Robert Hooke
a. a transmission electron microscope
b. a scanning electron microscope
c. a brightfield microscope
d. a darkfield microscope
e. a phase-contrast microscope
producing a darker image on a brighter background?
a. a transmission electron microscope
b. a scanning electron microscope
c. a brightfield microscope
d. a darkfield microscope
e. a phase-contrast microscope
A. crystal violet
B. safranin
C. acid-alcohol
D. iodine
(TEM) and preparation for a scanning electron microscope (SEM)?
A. Only the TEM specimen requires sputter coating.
B. Only the SEM specimen requires sputter-coating.
C. Only the TEM specimen must be dehydrated.
D. Only the SEM specimen must be dehydrated.
a. 2:3
b. 3:2
c. 6:25
d. 16:9
contact. The space between the two lenses is lled with water ((μ =4/3). The focal length
of the combination is
a. f/3
b. f
c. 4f/3
d. 3f/4
0.95 cm and 5 cm, respectively, are kept at a distance of 20 cm. At a distance of 25 cm
the large image is formed. Calculate the total magnication.
a. 84
b. 80
c. 94
d. 75
water (μ=4/3) is poured into the tank up to a height of 4 cm. After which a liquid that does
not mix with water is poured over it up to a height of 2 cm above the water. The refractive
index of the liquid is 3/2. What should be the vertical distance through which the
microscope must be moved to bring the object in focus again?
a. 2.61 cm
b. 1.67 cm
c. 5 cm
d. 4.1 cm
is lowered by 3 mm to view the bottom surface of the glass. What is the refractive index
of the glass?
a. 2
b. 1.66
c. 2.25
d. 1.4
is raised by 1 cm. To what height should the water be poured to bring the object in focus
again. Refractive index of water is 4/3.
a. 1 cm
b. 4/3 cm
c. 4 cm
d. 3 cm
a. 2 mm
b. 0.2 mm
c. 0.1 mm
d. 1 mm
a. 27.5 μm
b. 2.75 μm
c. 0.275 μm
d. None
a. The focal length and aperture of the eye lens
b. The apertures of the objective lens
c. Tube length of the microscope
d. None of the above
a. The focal length and aperture of the eye lens
b. The focal length and objective of the eye lens
c. The apertures of the objective and the eye lens
d. The wavelength of light illuminating the object
1. C, 2. A, 3. D, 4. B, 5. C, 6. D, 7. B, 8. E, 9. D, 10. D, 11. B, 12.B, 13.D, 14.C, 15.B, 16.b, 17.C, 18.B, 19.C, 20.B, 21.D
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