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Class 12th Physics Most VVI Objective MCQ Question Chapter Wise Electronics Devices ELECTRONIC DEVICES 1. The impurity doped in germanium to obtain n-type germanium is : (A) Tetravalent (B) Trivalent (C) Pentavalent (D) None of these Answer :- (C) 2. In full wave rectification, if input frequency is 50 Hz, then output frequency will be : (A) 50 […]
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BSEB 12th Exam Physics VVI Objective Chapter Wise Communication System Question COMMUNICATION SYSTEM 1. Which frequency range is used for TV transmission ? (A) 30 HZ – 300 Hz (B) 30 KHZ – 300 kHZ (C) 30 MHz – 300 MHz (D) 30 GHz – 300 GHZ Answer :- (C) 2. Sky wave communication is […]
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Class 12th Physics Objective Question Nuclei Chapter on New Pattern NUCLEI 1. Atomic number decreases with the emission of a particles from the nucleus : (A) 1 (B) 2 (C) 3 (D) 4 Answer :- (B) 2. Density of nucleus is about : (A) 2.29 x 107 kg m-3 (B) 2.29 x 10-7 kg m-3 (C) […]
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