Question

21. How was Usha in her studies?
22. When does the shadow disappear? Why?
23. Write a slogan for "Save Trees"​

Answer 1

Answer:

B. QUESTUON ANS When the sun is in the position that the rays hit the surface at exactly 90 degrees, emitted light will be fall directly below an object. Since the angle between the location of the sun and any object is what casts a shadow, shadows are mostly eliminated when these angles are aligned.

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