12th Standard CBSE Syllabus & Materials
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Published on: 27/05/2021
QB365 Provides the HOT Question Papers for Class 12 Physics, and also provide the detail solution for each and every HOT Questions. HOT Questions will help to get more idea about question pattern in every exams and also will help to get more marks in Exams
Download CBSE Class 12th Standard CBSE Physics question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Physics
Questions + Answers key
Take MCQ Physics Test1.
The ratio of number of free electrons to holes ne/nh for two different materials A and B are 1 and <1 respectively. Name the type of semi conductor to which A and B belongs.
2.
Which gate is represented by the following diagram?
3.
In a given diagram ,is the diode reverse (or) forward biased?
4.
In transistor a current controlled (or)temperature controlled device?.
5.
what is knee voltage in a junction Diode?
1.
If ne/nh = 1. Hence A is intrinsic semi conductor.
If ne/nh < 1, ne < nh hence B is P-type
2.
NAND GATE
3.
Reverse biased
4.
Transistor is a current controlled devices
5.
About 0.3V germanium .About 0.67V for silicon
12th Standard CBSE Syllabus & Materials
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