I Very short answer type questions:
1. Whether the Moon is luminous or non-luminous body?
2. What is Umbra?
3. What is a shadow?
4. Mention the names of three types of objects you have studied?
5. What is Penumbra?
II Short answer type questions:
1. Why is the Moon not considered as a non-luminous body?
2. State difference between transparent and translucent objects with examples.
3. When does a shadow form?
4. Write any three differences between shadow and image.
5. Define reflection of light.
III Long answer type questions:
1. What is reflection of light? Explain reflection of light with the help of an activity.
2. Explain that light has the property of rectilinear propagation with the help of a diagram.
3. How will you make a simple pin hole camera?
4. What are the essential conditions for the formation of a shadow?
5. Explain the characteristic features of images formed by a plane mirror with the help of
diagram.
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Answer:
1) Moon Is Non - Luminous Object .
2) Umbra Is Like A Shadow Or Darkness
3) A shadow is a dark (real image) area where light from a light source is blocked by an opaque object. It occupies all of the three-dimensional volume behind an object with light in front of it.
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