A pure tone audiogram with a dip at 2000Hz is characteristic of
Correct Answer: Otosclerosis
Description: In otosclerosis, there is a dip in bone conduction curve. It is different at different frequencies but maximum at 2000Hz and is called Carha's notch. Ref: Diseases of EAR, NOSE and THROAT by PL Dhingra; 7th Edition; Page no.96
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