Which of the following phenomena can change the direction of the light?
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Conduction
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Insulation
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Reflection
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Transparency
C
Correct answer
Explanation
Light rays always travel in straight lines. When a light ray hits any surface, such a ray is said to be an incident ray. After hitting the surface, this ray reflects back by making an angle with the incident ray. This is known as reflection. Thus, it changes the direction of light. Conduction is the phenomenon to allow the passage of heat or current through an object and insulation refers to resisting the flow of heat or current through the object; transparency refers to the property of an object to allow light to pass through it.