Silicon (at 300 K) has hole concentration (and equal electron concentration) of 1.5 × 10¹⁶ m^-3. After indium is doped, the new hole concentration is 4.5 × 10²² m^-3. The value of electron concentration in the doped silicon is: 

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-> AAI ATC answer key 2025 has been released on July 16, 2025 at the official website. 

-> Check the AAI ATC Exam Analysis 2025 for July 14, 2025 Exam. 

-> AAI ATC admit card 2025 has been released. 

The AAI ATC Exam 2025 will be conducted on July 14, 2025, for Junior Executive. 

-> AAI JE ATC recruitment 2025 application form has been released at the official website. The last date to apply for AAI ATC recruitment 2025 is May 24, 2025. 

-> AAI JE ATC 2025 notification is released on April 4, 2025, along with the details of application dates, eligibility, and selection process.

-> A total number of 309 vacancies are announced for the AAI JE ATC 2025 recruitment.

-> This exam is going to be conducted for the post of Junior Executive (Air Traffic Control) in the Airports Authority of India (AAI).

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-> The AAI JE ATC Salary 2025 will be in the pay scale of Rs 40,000-3%-1,40,000 (E-1).

-> Candidates can check the AAI JE ATC Previous Year Papers to check the difficulty level of the exam.

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