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Dispersion of Light
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General Science for Class 7
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Dispersion of Light
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Dispersion of Light
If light enters the glass with an angle of 42 degree or greater, the light will
refract
refract more
reflect totally internally
refract totally internally
Author:
rikazzz
Comment
Dispersion of Light
The wave and a ray that could be present at the top and bottom of seven lights are
gamma rays and micro waves
x-rays and radio waves
ultraviolet rays and infrared waves
gamma rays and infrared waves
Author:
rikazzz
Comment
Dispersion of Light
Periscope is used in submarines to see the happenings of events
above sea level
on sea level
in algae abundant ares
behind a wall or a barrier
Author:
rikazzz
Comment
Dispersion of Light
In concave lenses, a distant object appears
upright
virtual
magnified
inverted
Author:
rikazzz
Comment
Dispersion of Light
Some objects look white in color like snow because they
reflect all colors
absorb all colors
refract all colors
absorb white color
Author:
rikazzz
Comment
Dispersion of Light
We see yellow color on the screen because
red and blue dots shine more than green dots
green and red dots shine more than blue dots
green and blue dots shine more than red dots
dots shine at the same rate
Author:
rikazzz
Comment
Dispersion of Light
Unlike sound, light depends on
source
wavelength
medium
frequency
Author:
rikazzz
Comment
Dispersion of Light
‘Refractive index’ of ice is
0.5
1.5
1.33
1.31
Author:
rikazzz
Comment
Dispersion of Light
The colors on the disk are mixed
by our eyes
due to fast rotations
due to humidity
due to pressure
Author:
rikazzz
Comment
Dispersion of Light
The convex lens
shrinks the image
magnifies the image
sharpens the image
increases the contrast of the image
Author:
rikazzz
Comment
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