Question 1

Which numbered arrow is the refracted ray indicated by?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4 B

Question 2

When an electric stove element is hot enough, it gives off a dull red glow. When it cools to the point that it no longer glows, it will

Accepted Answer

A)  emit only shorter wavelength energy. 
B)  emit the same wavelength as before, but with less energy. 
C)  emit only longer wavelength energy. 
D)  stop emitting energy altogether. 
A)  emit only shorter wavelength energy. 
B)  emit the same wavelength as before, but with less energy. 
C)  emit only longer wavelength energy. 
D)  stop emitting energy altogether. C

Question 3

What are the units of h in the equation E = hf?

Accepted Answer

A) 
  
B) 
  
C)  J×s 
D)  W×m 
A) 
  
B) 
  
C)  J×s 
D)  W×m C

Question 4

The range of energies emitted by the Sun is most intense near the yellow-green wavelengths.

Accepted Answer

A) True 
 B)False

Question 5

The index of refraction for flint glass is 1.5. This means that

Accepted Answer

A)  light travels faster in this substance than it does in vacuum. 
B)  the wavelength of light passing through glass is 1.5× longer as it is in vacuum. 
C)  the speed of light is slower in this substance than it is in vacuum. 
D)  a ray of light is refracted away from the normal as it passes from air into glass. 
A)  light travels faster in this substance than it does in vacuum. 
B)  the wavelength of light passing through glass is 1.5× longer as it is in vacuum. 
C)  the speed of light is slower in this substance than it is in vacuum. 
D)  a ray of light is refracted away from the normal as it passes from air into glass.

Question 6

Consider an electrical transformer has 10 loops on its primary coil and 20 loops on its secondary coil. What is the current in the secondary if the current is the primary coil is 5.0 A?

Accepted Answer

A)  2.5 A 
B)  5.0 A 
C)  10.0 A 
D)  20.0 A 
A)  2.5 A 
B)  5.0 A 
C)  10.0 A 
D)  20.0 A

Question 7

Ultraviolet light waves carry more energy than infrared light waves.

Accepted Answer

A) True 
 B)False

Question 8

If one cuts a current carrying wire, the flow of electricity will spill out into the air.

Accepted Answer

A) True 
 B)False

Which numbered arrow is the refracted ray indicated by? $Which numbered arrow is the refracted ray indicated by?$

When an electric stove element is hot enough, it gives off a dull red glow. When it cools to the point that it no longer glows, it will

What are the units of h in the equation E = hf?

The range of energies emitted by the Sun is most intense near the yellow-green wavelengths.

The index of refraction for flint glass is 1.5. This means that

Consider an electrical transformer has 10 loops on its primary coil and 20 loops on its secondary coil. What is the current in the secondary if the current is the primary coil is 5.0 A?

Ultraviolet light waves carry more energy than infrared light waves.

If one cuts a current carrying wire, the flow of electricity will spill out into the air.

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Exam 2: Light and Electricity

Which numbered arrow is the refracted ray indicated by?

When an electric stove element is hot enough, it gives off a dull red glow. When it cools to the point that it no longer glows, it will

What are the units of h in the equation E = hf?

The range of energies emitted by the Sun is most intense near the yellow-green wavelengths.

The index of refraction for flint glass is 1.5. This means that

Consider an electrical transformer has 10 loops on its primary coil and 20 loops on its secondary coil. What is the current in the secondary if the current is the primary coil is 5.0 A?

Ultraviolet light waves carry more energy than infrared light waves.

If one cuts a current carrying wire, the flow of electricity will spill out into the air.

What Is Science?, Motion, Wave Motions, Sounds, Energy, Heat and Temperature

Chemical Reactions, Water and Solutions

The Universe and Nuclear Reactions

The Solar System

Geologic Time , Earth in Space, Plate Tectonics, Rocks and Minerals

Earths Waters , Atmosphere of Earth, Weather and Climate

Filters

Which numbered arrow is the refracted ray indicated by? $Which numbered arrow is the refracted ray indicated by?$