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Question: knowing the flux of light from a source the information...

Question details

Knowing the flux of light from a source, the information you need to determine the luminosity of the source is

Question 2 options:

The distance to the source.

Frequency of the emitted light

Temperature of the source

The spectrum of the emitted light

Which star is most distant

Question 3 options:

A star 10 light years away

A star having a parallax of 0.1 seconds of arc

A star having a parallax of 1 second of arc

A star 1 parsec away

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