Author Question: The radiation our eyes are most sensitive to is the color A) black at 227 nm. B) blue at 4,321 ... (Read 55 times)

shofmannx20 · **on:** Jul 27, 2018

The radiation our eyes are most sensitive to is the color

A) black at 227 nm.
B) blue at 4,321 nm.
C) violet at 7,000 Angstroms.
D) yellow-green at about 550 nm.
E) red at 6563 Angstroms.

Question 2

According to the inverse square law of light, how will the apparent brightness of an object change if its distance to us triples?

A) Its apparent brightness will decrease by a factor of 3.
B) Its apparent brightness will increase by a factor of 9.
C) Its apparent brightness will increase by a factor of 3.
D) Its apparent brightness will decrease by a factor of 9.