Question 1

What percentage of the light falling on a piece of photographic film is typically wasted (does not contribute to the formation of the image)?

Accepted Answer

A)  2% 
B)  45% 
C)  18% 
D)  98% 
A)  2% 
B)  45% 
C)  18% 
D)  98%

Question 2

The wavelength of the maximum emission of an object depends only on the size of an object.

Accepted Answer

A) True 
 B)False

Question 3

The fraction of incoming photons recorded by a charge-coupled device (CCD)is greater than that recorded by a typical photographic plate by what factor?

Accepted Answer

A)  10 times 
B)  2 times 
C)  More than 100 times 
D)  35 times 
A)  10 times 
B)  2 times 
C)  More than 100 times 
D)  35 times

Question 4

The main optical element in a refracting telescope is a

Accepted Answer

A)  lens. 
B)  mirror. 
C)  combination of many small plane mirrors. 
D)  prism of glass. 
A)  lens. 
B)  mirror. 
C)  combination of many small plane mirrors. 
D)  prism of glass.

What percentage of the light falling on a piece of photographic film is typically wasted (does not contribute to the formation of the image)?

The wavelength of the maximum emission of an object depends only on the size of an object.

The fraction of incoming photons recorded by a charge-coupled device (CCD)is greater than that recorded by a typical photographic plate by what factor?

The main optical element in a refracting telescope is a

Predicting the Motions of the Stars, Sun, and Moon

Analyzing Scales and Motions of the Universe

Exploring Our Evolving Solar System

Uncovering Earths Systems

Exploring Terrestrial Surface Processes and Atmospheres

Observing the Dynamic Giant Planets

Looking for Life Beyond Earth

Probing the Dynamic Sun

Observing Properties of Distant Stars

Inferring Patterns in Star Life Cycles

Predicting the Violent End of the Largest Stars

Exploring Our Galaxy

Investigating Other Galaxies

Observing the Evolution of the Universe

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Exam 2: Decoding the Hidden Messages in Starlight

What percentage of the light falling on a piece of photographic film is typically wasted (does not contribute to the formation of the image)?

The wavelength of the maximum emission of an object depends only on the size of an object.

The fraction of incoming photons recorded by a charge-coupled device (CCD)is greater than that recorded by a typical photographic plate by what factor?

The main optical element in a refracting telescope is a

Predicting the Motions of the Stars, Sun, and Moon

Analyzing Scales and Motions of the Universe

Exploring Our Evolving Solar System

Uncovering Earths Systems

Exploring Terrestrial Surface Processes and Atmospheres

Observing the Dynamic Giant Planets

Looking for Life Beyond Earth

Probing the Dynamic Sun

Observing Properties of Distant Stars

Inferring Patterns in Star Life Cycles

Predicting the Violent End of the Largest Stars

Exploring Our Galaxy

Investigating Other Galaxies

Observing the Evolution of the Universe

Filters