Characterstics of images

Q.

Shadow and image are similar.

1. True
2. False

Q. The essential condition for the formation of shadow is

1. There should be an opaque material.
2. The object must be placed in the path of the light.
3. All of these.
4. There should be a source of light and screen.

Q.

One day, Richa saw the shadow of a bird on the wall of her room. After some time, it disappears, and it surprised her where the bird has gone. Her brother explains it was nothing as it was the shadow of his hand.

Shadow can mislead you. Justify the statement.