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Chapter 10 - Optical Instruments - 4
1.
The linear magnification of the objective of compound microscope
a) h
i
/ h
b) h
2
/ h
c) h
f
/ h
d) h
i
/ h
2
2.
An optical device used for viewing distant object is called
a) Binocular
b) Microscope
c) Telescope
d) Night Vision Device
3.
In normal adjustment a magnifying power of astronomical telescope is
a) f
e
/ f
o
b) f
o
/ f
e
c) f
o
/ f
c
d) f
c
/ f
e
4.
The part of spectrometer at which the prism or grating is placed is called
a) Spectrometeric
b) Spectrometeric Tables
c) Round table
d) Turn table
5.
The resolving power of a lens of diameter D for light of wavelength λ is
a) a
min
= 1.22 λ / g
b) a
min
= 1.22 λ / D
c) a
min
= 1.24 λ / D
d) a
min
= 1.22 λ / e
6.
The capacity of a fibre optic to carry tremendous information is called
a) Wave length
b) Frequency band
c) Frequency Width
d) Band width
7.
The ability of an instrument to reveal the minor details of the object under examination is called
a) Applying power
b) Resolving power
c) Power of concentration
d) Focussing power
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