AIPMT 2009 | Semiconductor Electronics Question 74 | Physics

AIPMT 2009

MCQ (Single Correct Answer)

-1

The symbolic representation of four logic gates are given below

AIPMT 2009 Physics - Semiconductor Electronics Question 68 English

The logic symbols for OR, NOT and NAND gates are respectively

(iv), (i), (iii)

(iv), (ii), (i)

(i), (iii), (iv)

(iii), (iv), (ii)

AIPMT 2009

MCQ (Single Correct Answer)

-1

Out of Syllabus

A transistor is operated in common-emitter configuration at V_C = 2V such that a change in the base current from 100 $$\mu $$A to 200 $$\mu $$A produces a change in the collector current from 5 mA to 10 mA. The current gain is

100

150

AIPMT 2009

MCQ (Single Correct Answer)

-1

A p-n photodiode is fabricated from a semiconductor with a band gap of 2.5 eV. It can detect a signal of wavelength

4000 nm

6000 nm

4000 $$\mathop A\limits^ \circ $$

6000 $$\mathop A\limits^ \circ $$

AIPMT 2009

MCQ (Single Correct Answer)

-1

Sodium has body centred packing. Distance between two nearest atoms is 3.7 $$\mathop A\limits^ \circ $$. The lattice parameter is

4.3 $$\mathop A\limits^ \circ $$

3.0 $$\mathop A\limits^ \circ $$

8.6 $$\mathop A\limits^ \circ $$

6.8 $$\mathop A\limits^ \circ $$

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