PR interaval

Written By Unknown on Tuesday, 8 November 2011 | 04:15


PR interaval is

a) 0.12- 0.16 seconds 

b) 0.3 – 0.4 sec. 

c) 0.6 – 0.8 sec. 

d) 0.12 – 4 sec. 

[Ans (a)]

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