Question

D. Short-answer questions
1. What is a luminous object? Give examples
2. How are shadows formed?​

Answer 1

Answer:

here is your answer

Explanation:

1. Objects that can emit light energy by themselves are known as luminous objects. Objects that cannot emit light energy by themselves are known as non-luminous objects. ... The non-luminous objects are visible because of luminous objects. The sun and candle are the two examples. The moon and plants are the two examples.
2. A shadow is actually just a space or region, where there is no light since an opaque object is blocking light rays. The position and intensity of the source of light affect the properties of the type of shadow that is formed. For example, let us consider the sun to be a light source. When it is early morning or late afternoon, you may notice that your shadows are elongated. But at noon, when the sun is right above your head, the shadow formed is short and dark in nature.