Q.1
The energy must be reflected and returned through a singleprism, so that it passes through the prism in both directions is called __________
  • a) Cornu mounting
  • b) Mono mounting
  • c) Littrow mounting
  • d) Trio mounting
Q.2
Most modern instruments now use a _______ as a dispersing element in the monochromator.
  • a) Prism monochromators
  • b) Holographic gratings
  • c) Diffraction gratings
  • d) Replica gratings
Q.3
A typical reflection grating may havegrooves/mm, which means the grooves are spaced at about _______ intervals.
  • a) 800 nm
  • b) 600 nm
  • c) 860 nm
  • d) 680 nm
Q.4
What is reproduced from a master holographic grating by moulding its grooves onto a resin surface or silica substrate?
  • a) Diffraction grating
  • b) Replica grating
  • c) Silicate glasses
  • d) Fused silica
Q.5
What is the utilization wavelength limit for quartz?
  • a) 300 nm
  • b) 350 nm
  • c) 180 nm
  • d) 210 nm
Q.6
Which material is used to reduce the reflections from glass surfaces?
  • a) Manganese Flouride
  • b) Magnesium oxide
  • c) Magnesium Flouride
  • d) Manganese oxide
Q.7
With the use of _______ chromatic aberrations and other imperfections of the lenses are minimized.
  • a) Lenses
  • b) Mirrors
  • c) Slits
  • d) Diaphragm
Q.8
_______ are often used for splitting the beam.
  • a) Multilayer coated lenses
  • b) Silvered films
  • c) Silicate glasses
  • d) Half-silvered mirrors
Q.9
The sample holder is generally inserted somewhere in the interval between the ______and _______
  • a) Silvered film and multi-layered coating
  • b) The light source and the detector
  • c) The light source and silvered film
  • d) Silvered film and the detector
Q.10
In sample holders, for such applications, acm path-length with about a ________ volume cell is employed.
  • a) 0.3 ml
  • b) 3 liters
  • c) 0.3 liters
  • d) 3 ml
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