Green light has a shorter wavelength than orange light. In a 5-inch telescope, green light will:
A)provide better angular resolution than orange light.
B)come to the same exact focus as orange light.
C)provide worse angular resolution than orange light.
D)allow dimmer stars to be observed.
E)reduce the effects of atmospheric turbulence.

Question

Quizplus · Accepted Answer

Green light has a shorter wavelength than orange light, meaning it has higher frequency and is more easily diffracted. This allows for better angular resolution in a telescope, meaning the ability to distinguish between two closely spaced objects. So, in a 5-inch telescope, green light will provide better angular resolution than orange light. The angular resolution of a telescope is determined by the wavelength of light and the diameter of the telescope's aperture. Since green light has a shorter wavelength than orange light, it will provide better angular resolution in a 5-inch telescope.

Green Light Has a Shorter Wavelength Than Orange Light