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The range of time scale is about ...............

(a) 10–10 sec to1026 sec

(b) 10–22 sec to1018 sec

(c) 10–15 sec to1015 sec 

(d) 1020 sec to1025 sec

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(b) 10–22 sec to1018 sec
The range of time scale is 10–22 sec to 1018 sec.

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