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Delhi Police Constable Exam Model Paper 4
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© examsnet.com
Question : 8
Total: 100
Twinkling of the stars is due to the ______ of starlight through the atmosphere.
Refraction
Dispersion
Scattering
Reflection
Validate
Solution:
The correct answer is
Refraction
.
The twinkling of the stars is due to the
refraction
of starlight through the atmosphere.
Refraction is the change in direction of a wave passing from one medium to another.
Reflection
is when light bounces off an object.
The separation of visible light into its different colors is
known as dispersion.
Scattering
is a change in the direction of motion of a particle because of a collision with another particle.
The blue color of the sky is due to
scattering.
A Rainbow is formed due to the
dispersion
of sunlight through water droplets present in the atmosphere.
The pencil look bent in water due to refraction.
Raindrops are spherical because of
surface tension forces.
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