1(iii)
While playing with his friends, Peter inserted a stick into his ear. He lost his hearing due to the rupture of:
- (a)Ear drum
- (b)Pericardium
- (c)Cornea
- (d)Pinna
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Ear drum
Reason — Rupture of ear drum leads to loss of hearing because ruptured ear drum cannot vibrate and transmit sound wave.