Download Electromagnetic Waves and Optics Review Questions:

Electromagnetic Waves and Optics Review Questions:
1.
Calculate the range of frequencies in the electromagnetic spectrum that correspond to visible
radiation. The range of wavelengths is 400 nanometers to 700 nanometers (0.0000004 m to 0.0000007
m).
Frequency 
Wave Speed
3  10 8 m/s

 7.5  10 14 Hz, and
Wavelength 400  10 9 m
Frequency 
Wave Speed
3  10 8 m/s

 4.3  10 14 Hz
Wavelength 700  10 9 m
Find the position of the image of the object shown by tracing at least two light rays that leave the object
hit the reflecting or refraction surface and enter your eyes. Indicate whether the image is virtual or real.
When determining the path of the light rays, be sure to use the normal as a reference.
2.
Reflection from a plane mirror:
object
i’ i
i
i’
mirror
normal
normal
virtual image
3.
Reflection from a convex mirror:
normal
i’
i
object
virtual
image
C
i
normal
i’
4.
Reflection from a concave mirror:
normal
i’
i
i’
i
C
normal
object
virtual
image
5.
Reflection from a concave mirror:
normal
i
i’
object
C
i
i’
real
image
normal
In the following questions a light ray (or rays) leave an object and travel toward a boundary between two
materials. Trace their paths as they cross the boundary (or boundaries).
6.
air-water boundary – object in air:
object
normal
normal
air
water
7.
water-air boundary – object in water:
normal
normal
normal
air
water
total
internal
reflection
object
8.
ray traveling in air, then glass, and then air again:
normal
normal
object
air
glass
air