KCET · BIOLOGY · STD 11 - 15. Body Fluids and Circulation

The T-wave in an ECG represents

A depolarisation of ventricles
B electrical excitation of atria
C begining of systole
D return of the ventricles from excited state

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Answer & Solution

Correct Answer

(D) return of the ventricles from excited state

Step-by-step Solution

Detailed explanation

(D) return of the ventricles from excited state,
The T- wave in an ECG represents the ventricales or replorization return of the ventricles from the excited to normal state (repolarisation).

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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