1
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
The ionization energy of the electron in the hydrogen atom in its ground state is 13.6 eV. The atoms are excited to higher energy levels to emit radiations of 6 wavelengths, Maximum wavelength of emitted radiation corresponds to the transition between
A
n = 3 to n = 1 states
B
n = 2 to n = 1 states
C
n = 4 to n = 3 states
D
n = 3 to n = 2 states
2
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The number of beta particles emitted by a radioactive substance is twice the number of alpha particles emitted by it. The resulting daughter is an
A
isomer of parent
B
isotone of parent
C
isotope of parent
D
isobar of parent
3
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
The symbolic representation of four logic gates are given below

AIPMT 2009 Physics - Semiconductor Electronics Question 62 English

The logic symbols for OR, NOT and NAND gates are respectively
A
(iv), (i), (iii)
B
(iv), (ii), (i)
C
(i), (iii), (iv)
D
(iii), (iv), (ii)
4
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
A transistor is operated in common-emitter configuration at VC = 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
A
100
B
150
C
50
D
75
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