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Question

There are 86,400 seconds in a day. How many days long is a second? Express your answer in scientific notation upto 3 decimal places.

A
1.157×106
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B
1.234×105
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C
1.157×105
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D
1.432×104
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Solution

The correct option is C 1.157×105
1 day = 86400 sec
So, 86400 s = 1 day
So, 1 s = 186400 days
So, 1 s = 0.00001157.. days
So, 1 s = 1.157 × 105 days


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