Question

3
31. The object does not cast a shadow when
(a) surface of an object is rough
(b) light shines on an object from above
(c) an object is opaque
fd) none of these.​

Answer 1

Answer:

none of these

reasons- for reference

A)doesnt matter of the texture, take a rough object like a brick and put it under the sun or a light source and see for yourself.

B) take yourself under the sun for example, your shadow becomes shorter in the afternoon and long in evenings even though the sun is above your head.

C) obviously, opaque object avoid light passage through them!

so its none of these

hope it helps