Question

which object is always not necessary to observe a shadow​

Answer 1

Answer:

(a) Sun is not always necessary to observe a shadow because any source of light, an opaque object and a screen are just necessary enough to see a shadow. Question 5: Paheli observed the shadow of a tree at 8:00 am, 12:00 noon and 3:00 pm.........................

Answer 2

sun is not necessary to observe a shadow because any source of light, an opaque object and a screen are just necessary enough to see a shadow.