Question

why the sources of energy do not give shadow what is reason behind it ???​

Answer 1

Answer:

here is your answer

Explanation:

Objects become visible when they interact with light, for example by scattering it. Dark matter is a substance which doesn't interact with electromagnetic waves at all, which is why they don't scatter light, and we can't see them. As such, light would travel straight through them, and they wouldn't cast shadows at all.

Answer 2

Explanation:

To form a shadow a source of light is required. It is only when light rays are obstructed we get the shadow of the object. They are only formed in opaque or Translucent objects. If we take a glass slab, no shadow is formed because it allows light to passs through it..