Q) If the average life of a person is taken as 100 s, the age of the universe on this scale is of the order (1) 10^10 s (2) 10^8 s (3) 10^17 s (4) 10^9 s
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Explanation:
fifteen sec
life time
=
universe age
100 year
100
15
=
universe age
100×12×30×24×60×60
universe age =2.07×10
10
So order =10
10
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