1. Eye cannot resolve any image less than
a) 1ìm
b) 2ìm
c) 7ìm
d) 5ìm
2. Compound Microscope was discovered by
a) A.V. Lewenhoek
b) Janssen and Hans
c) Pasteur
d) None of these
3. Electron Microscope was discovered by
a) Prof. Fritz
b) Janssen and Hans
c) Knoll and Ruska
d) None of these
4. Condensation of light in light Microscope is by
a) Objective
b) Condensor
c) Ocular
d) All of these
5. Magnification range of light microscope is
a) 1000x – 5000x
b) 1000x – 2000x
c) 500x – 1000x
d) None of these
6. Light gathering capacity of Microscope is called
a) Numerical aperture
b) Angular aperture
c) Both a and b
d) None of these
7. If 10x and 40x objectives are used (air is the medium), the numerical aperture is
a) 1.5
b) 2.0
c) 1.8
d) 1.0
8. The ability of Microscope to distinguish two objects into two separate objects, is called
a) Resolving power
b) Wave length
c) N.A.
d) None of these
9. Limit of resolution of compound microscope is
a) 0.018 Ao
b) 0.1 mm
c) 5 ìm
d) 1 mm
10. Source of light in fluorescence microscopy is from
a) Mercury lamp
b) Sunlight
c) Both a and b
d) None of these