In order to maximize the resolution in the visible range of a circular aperture such as a telescope, it is best to
1.apply a violet filter and use the telescope with the largest aperture possible.
2.apply a red filter and use the telescope with the largest aperture possible.
3.apply a violet filter and use the telescope with the smallest aperture possible.
4.apply a red filter and use the telescope with the smallest aperture possible.
1
You might also like to view...
A metallic surface is illuminated with light of wavelength 400 nm
If the work function for this metal is 2.40 eV, what is the maximum kinetic energy of the ejected electrons, in electron-volts? (1 eV = 1.60 × 10-19 J, c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s)
Consider the equipotential diagram shown in problem E3T.12. In the expression 
, what is the approximate value of b?
A. 8
B. 2
C. 0
D. 1/2
E. 1/8
F. Some other value (specify)
A contact lens is made of plastic with an index of refraction of 1.50 . The lens has an outer radius of curvature of +2.0 cm and an inner radius of curvature of +2.5 cm. What are the focal length and the power of the lens?
What do astronomers mean by light pollution?
A) Light pollution refers to pollution caused by light industry as opposed to heavy industry. B) Light pollution refers to harmful gases emitted by common street lights. C) Light pollution refers to light used for human activities that brightens the sky and hinders astronomical observations. D) Light pollution refers to the lights that must be used inside major observatories and that make it difficult for astronomers' eyes to adapt to darkness. E) Light pollution is another name for sunlight, which makes it impossible to see stars in the daytime.