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Q.

 Select the incorrect statement about ECG.

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a

P wave represents depolarisation of atria.

b

QRS complex represents depolarisation of ventricles.

c

T wave represents repolarisation of atria.

d

Ventricular systole begins shortly after Q wave.

answer is C.

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Detailed Solution

T wave represents repolarisation of ventricles, not atria. Atrial repolarisation not represented as a distinct wave on a standard ECG because it occurs simultaneously with ventricular depolarisation (QRS complex), and the atrial repolarization wave is usually overshadowed by the larger QRS complex.

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