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20 questions
Law of Reflection states that the incident angle is ____ the reflected angle
greater than
less than
equal to
If Θ1 is 70 degrees what is Θ2?
20
40
70
90
If Θ1 is 70 degrees what is Θ3?
20
40
70
90
If Θ1 is 70 degrees what is Θ4?
20
40
70
90
If the incident angle is 40 degrees what is the reflected angle?
40
50
80
90
If the incident angle is 40 degrees what is the angle from the reflected ray to the mirror?
40
50
80
90
If the man is 4 m from the mirror, his image is how far from the mirror?
2 m
4 m
8 m
The man's image appears to be-
upright
inverted
alive
moving at a different rate
The man's image appears to be-
real
virtual
singing about who they are inside
looking for a way out
The man's image appears to be-
larger
smaller
same size
laughing at him
If the focal length is 10 cm and the object is placed 15 cm away, where is the image located?
-30
5
150
30
If the image is located 10 cm away from the lens and the object is placed 15 cm away, what is the focal length?
-5
6
150
30
Match the following image descriptions
do=f | Real, inverted, larger | ||
do>2f | Real, inverted, smaller | ||
f<do<2f | Real, inverted, same size | ||
do=2f | No image | ||
do<f | Virtual, Upright, Larger |
If the object distance is 20 cm and the image distance is -10 cm, what is the focal length?
-6.67
6.67
-15
15
When a light ray hits a smooth surface at an angle of 30 degrees, what is the angle of reflection?
30
60
90
120
If Θ2 is 45 degrees, what is Θ1?
45
90
135
180
Which EM wave travels the fastest through space?
Gamma
X-rays
Radio
All are the same speed
An astronomer finds a star is shifted to the red end of the spectrum, what does this mean?
It is approaching with a higher frequency
It is approaching with a lower frequency
It is moving away with a higher frequency
It is moving away with a lower frequency
Which EM wave is used to sanitize medical equipment before surgery?
Sound waves
UV rays
infrared waves
Gamma
All of the following EXCEPT ___ are used to sort the EM spectrum
Amplitude
Frequency
Wavelength
Energy
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