JEE Main 2021 (Online) 25th July Morning Shift | Semiconductor Question 95 | Physics

Consider a situation in which reserve biased current of a particular P-N junction increases when it is exposed to a light of wavelength $$\le$$ 621 nm. During this process, enhancement in carrier concentration takes place due to generation of hole-electron pairs. The value of band gap is nearly.

1 eV

4 eV

0.5 eV

2 eV

JEE Main 2021 (Online) 20th July Morning Shift

MCQ (Single Correct Answer)

-1

For the circuit shown below, calculate the value of I_z :

JEE Main 2021 (Online) 20th July Morning Shift Physics - Semiconductor Question 100 English

25 mA

0.1 A

0.15 A

0.05 A

JEE Main 2021 (Online) 18th March Evening Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

The correct relation between $$\alpha$$ (ratio of collector current to emitter current) and $$\beta$$ (ratio of collector current to base current) of a transistor is :

$$\beta = {\alpha \over {1 + \alpha }}$$

$$\alpha = {\beta \over {1 - \alpha }}$$

$$\alpha = {\beta \over {1 + \beta }}$$

$$\beta = {1 \over {1 - \alpha }}$$

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