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Question

If today in the night sky, we observe a half-illuminated Moon, then after how many days will we be able to observe the same?


A
15 days
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B
30 days
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C
45 days
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D
60 days
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Solution

The correct options are
A 15 days
B 30 days
C 45 days
D 60 days

From the above image, it is clear that every after (7.5+7.5)=15 days we can see the halfly illuminated moon. This means after 15 days, 30 days, 45 days, and 60 days, we will see the half-illuminated Moon again.

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