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WorksheetsOptics Review
Total questions: 15
Worksheet time: 17mins
Which of the following is necessary for light to propagate?
A air
B aether
C matter
D None of these are necessary.
A star appears to be white according to its spectral composition, but it appears blue when observed through a telescope. What is the best explanation for this phenomenon?
A The object is moving toward Earth.
B The object is moving away from Earth.
C The object is moving parallel to Earth.
D all of the above
Which of the following is necessary in order to classify the different types of electromagnetic radiation?
amplitude
frequency
phase
velocity
A pencil submerged in a clear glass of water may appear broken or bent when observed from the side of the glass. Which of the following characteristics describes this broken or bent appearance?
refraction
diffraction
reflection
amplitude
A light ray strikes the mirror such that the angle of incidence is 30 degrees. What is the angle between the incident ray and reflected ray?
0°
15°
30°
60°
A student approaches a flat mirror at 3 m/s. At what speed will the student and their virtual image approach one another?
0 m/s
3 m/s
6 m/s
9 m/s
What electromagnetic wave travels the fastest?
microwave
ultraviolet
xray
All travel at the speed of light ‘c’.
In a vacuum a particular light source gives off light waves with a measured wavelength of
2.0 X 10-7 m. What is the frequency of the light source?
6.67 X 10-15 Hz
6.0 X 10-11 Hz
1.5 X 1015 Hz
not enough information
Given a scenario in which the sun is encapsulated very quickly by a large blanket, how long would it take for the resulting darkness to reach Earth 1.5 X 1011 m away?
0 s; It would happen instantaneously.
4.5 s
8.3 s
500 s
What part of the electromagnetic spectrum can penetrate all human skin and soft tissue?
microwave
visible light
ultraviolet
xray
If an object placed 10.0 cm in front of the lens produces an image 15 cm from the lens on the opposite side, what is the magnitude of the focal length for the lens?
5.00 cm
6.00 cm
25.0 cm
30.0 cm
A beam of laser light transmits through water at a 45 angle. It impacts a piece of submerged gelatin. Please find the new angle of the laser beam. (The speed of light in water (2.25x108m/s) and speed of light in gelatin (2.28x108m/s))
44°
45°
46°
47°
48°
What is size and orientation of the image when a 30cm bottle is placed 40cm from a concave mirror? The mirror has a focal length of a 30cm.
45 cm tall upright
45 cm tall upside down
90 cm tall upright
90 cm tall upside down
The rearview mirror has a focal length of 2 meters. The car is 15 meters behind the mirror, how close does the car appear to be?
2.17m
2.31m
2.37m
2.56m
A laser rangefinder is fired from a submarine in saltwater at a helicopter flying overhead. The angle of light leaving the submarine is 30⁰ changing to 39⁰ as it refracts from the water into the air. What is the speed of light in saltwater?
1.65 x108
2.29 x108
2.39x108
2.78x108
