SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the forming of shadows
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the speed of light
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the rainbow effect
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the brightness of the Sun
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Detailed explanation-1: -Shadows are evidence of light travelling in straight lines. An object blocks light so that it can’t reach the surface where we see the shadow. Light fills up all of the space before it hits the object, but the whole region between the object and the surface is in shadow.
Detailed explanation-2: -The fact that light travels in a straight path can be demonstrated by putting an object in its path. If the object is opaque and casts a dark shadow then it shows that light travels in a straight line.
Detailed explanation-3: -2.1 Reflection The Ancient Greek mathematician Euclid described the law of reflection in about 300 BCE. This states that light travels in straight lines and reflects from a surface at the same angle at which it hit it.
Detailed explanation-4: -Shadows are formed because light travels in straight lines. On cloudy days, it can seem as if there are no shadows at all. Yet on a clear day, if you stand with your back to the sun, you are sure to see your shadow. Shadows are formed when an opaque object or material is placed in the path of rays of light.