1
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
In the circuit shown in the figure, the input voltage Vi is 20 V, VBE = 0 and VCE = 0. The values of IB , IC and $$\beta $$ are given by NEET 2018 Physics - Semiconductor Electronics Question 22 English
A
IB = 40 $$\mu $$A, IC = 10 mA, $$\beta $$ = 250
B
IB = 25 $$\mu $$A, IC = 5 mA, $$\beta $$ = 200
C
IB = 20 $$\mu $$A, IC = 5 mA, $$\beta $$ = 250
D
IB = 40 $$\mu $$A, IC = 5 mA, $$\beta $$ = 125
2
NEET 2018
MCQ (Single Correct Answer)
+4
-1
In the combination of the following gates the output Y can be written in terms of inputs A and B as NEET 2018 Physics - Semiconductor Electronics Question 23 English
A
$$\overline {A.B} $$
B
$$A.\overline B + \overline A .B$$
C
$$\overline {A.B} + A.B$$
D
$$\overline {A + B} $$
3
NEET 2018
MCQ (Single Correct Answer)
+4
-1
The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom, is
A
1 : 1
B
1 : -1
C
2 : -1
D
1 : -2
4
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
For a radioactive material, half-life is 10 minutes. If initially there are 600 number of nuclei, the time taken (in minutes) for the disintegration of 450 nuclei is
A
20
B
10
C
30
D
15
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