Question

Which of the following is not always necessary to observe a shadow?
(a) Sun
(b) Screen
(c) Source of light
(d) Opaque object

Answer 1

Question:-

• Which of the following is not always necessary to observe a shadow?
• (a) Sun
• (b) Screen
• (c) Source of light
• (d) Opaque object

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.

Answer 2

A. Sun is your answer z

Instead of sun, we can also use a torch, light bulb etc