EASY
12th Bihar Board
IMPORTANT
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Binary of decimal number 25 is : 

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Important Questions on Semiconductor Electronics: Materials, Devices and Simple Circuits

MEDIUM
12th Bihar Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Semiconductor Electronics: Materials, Devices and Simple Circuits>Bihar Board-2020>Q 9
What is a semiconductor?
HARD
12th Bihar Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Semiconductor Electronics: Materials, Devices and Simple Circuits>Bihar Board-2020>Q 10
What is meant by p-type and N-type semiconductors? Explain the working of a PN junction diode.