Xenon

When used at a wavelength of 1 micron, a telescope can resolve angles as small as 0.1 seconds of arc. How small an angle could the telescope resolve when used at a wavelength of 5 microns? a. 0.02 seconds of arc b. 0.004 seconds of arc c. 0.5 seconds of a...

In the laboratory, an atom emits a spectral line at a wavelength of 400 nanometers. In the spectrum of a star, the same spectral line is found to have a wavelength of 410 nanometers. What can be said about the star? a. It is hotter than the Sun. b. It is...

A star is moving away from an observer at 1% of the speed of light. At what wavelength would the observer find an emission line which would occur at a wavelength of 6000 Angstroms if the star were at rest? a. 6060 Angstroms b. 6010 Angstroms c. 6000 Angst...

A TV satellite broadcasts at a frequency of 5000 MHz, (1 MHz = 1 million Hertz). What is the wavelength of this radiation? a. 1000 cm b. 5 million centimeters c. 6 cm d. 0.3 cm

The same telescope is used to obtain an image using light of the following wavelengths. Which of the images will have the poorest angular resolution? a. blue b. yellow c. red d. infrared