Question

The GHRS was a spectrograph designed to operate in the_________
(A) Infrared
(B) Ultraviolet
(C) Visible
(D) None of the above

Answer 1

Hint A spectrograph is an instrument used for photographing or for recording spectra. It separates the incoming light according to the frequency or wavelength which is used in detectors and telescopes. GHRS is used to operate ultraviolet ranging between 1050$\mathop A\limits^o$to 3200$\mathop A\limits^o$.

Complete step-by-step answer
The GHRS which is short for Goddard High Resolution Spectrograph, was a spectrograph designed to operate in the ultraviolet region of light.

So the answer is A

Note The GHRS was built by the Goddard Space Flight Centre and hence got its name. It could achieve a spectral resolution of 90,000. This was built alongside 2 other spectrometers, The FOC and FOS. Both of them were also optimized for ultraviolet regions of light and they were capable of the highest spatial resolution of any instruments on Hubble. The GHRS uses a Ritchey-Chretien reflector as its primary telescopic style. It is located in the low earth orbit.