question 1 (5 points)\nlisten\nwhich of the following is a measure of the amount of light a star directly…

question 1 (5 points)\nlisten\nwhich of the following is a measure of the amount of light a star directly emits?\na) brightness\nb) luminosity\nc) wavelength\nd) intensity\nquestion 2 (5 points)\nlisten\nhow would a collapsing universe affect light emitted from clusters and superclusters?\na) light would acquire a blueshift.\nb) light wouldnt be affected.\nc) light would acquire a redshift.\nd) light cant be measured from clusters and superclusters.

question 1 (5 points)\nlisten\nwhich of the following is a measure of the amount of light a star directly emits?\na) brightness\nb) luminosity\nc) wavelength\nd) intensity\nquestion 2 (5 points)\nlisten\nhow would a collapsing universe affect light emitted from clusters and superclusters?\na) light would acquire a blueshift.\nb) light wouldnt be affected.\nc) light would acquire a redshift.\nd) light cant be measured from clusters and superclusters.

Answer

Brief Explanations:

For Question 1, luminosity is the measure of the total amount of energy (including light) emitted by a star per - unit time. Brightness depends on distance, wavelength is related to the color of light, and intensity can have different meanings but is not the specific measure of light emitted by a star. For Question 2, in a collapsing universe, objects are moving closer together. According to the Doppler effect, when an object is moving towards an observer, the light it emits is blueshifted.

Answer:

Question 1: B. Luminosity Question 2: A. Light would acquire a blueshift.