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Difference between shadow and reflection - Light, Shadow and Reflections - CBSE Class 6 Science Video Lecture

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FAQs on Difference between shadow and reflection - Light, Shadow and Reflections - CBSE Class 6 Science Video Lecture

1. What is the difference between shadow and reflection?
Ans. Shadows and reflections are both related to the behavior of light, but they are different phenomena. A shadow is formed when an object blocks the path of light, resulting in a dark area behind the object. On the other hand, a reflection occurs when light hits a surface and bounces back, allowing us to see an image of the object. In simple terms, a shadow is the absence of light, while a reflection is the bouncing back of light.
2. How are shadows and reflections similar?
Ans. Shadows and reflections are similar in that they both involve the behavior of light. They are both formed when light interacts with objects or surfaces. Additionally, both shadows and reflections provide us with information about the presence of objects, although in different ways. Shadows give us an idea of the shape and size of an object, while reflections allow us to see an image of the object.
3. Can an object have both a shadow and a reflection at the same time?
Ans. Yes, an object can have both a shadow and a reflection at the same time. This occurs when light is incident on the object from multiple directions. The object will cast a shadow in the direction opposite to the light source, and it will also produce a reflection on a nearby surface if the surface is reflective. This is commonly observed in everyday situations, such as seeing your shadow and reflection when standing under sunlight.
4. How are shadows and reflections useful in our daily lives?
Ans. Shadows and reflections serve various purposes in our daily lives. Shadows help us determine the position and movement of objects. For example, the position and length of a shadow can tell us the time of the day. Shadows are also used in art and photography to create depth and contrast. Reflections, on the other hand, allow us to see ourselves in mirrors and other reflective surfaces. They are also utilized in optics, such as in telescopes and cameras, to form images of distant objects.
5. Can shadows and reflections change in size and shape?
Ans. Yes, shadows and reflections can change in size and shape. The size and shape of a shadow depend on the position of the light source, the distance between the object and the surface where the shadow is cast, and the orientation of the object. Similarly, the size and shape of a reflection depend on the angle at which light hits the surface and the angle at which it reflects. Moving the light source or changing the position of the object can cause variations in the size and shape of both shadows and reflections.
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