1
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
A nucleus of uranium decays at rest into nuclei of thorium and helium. Then
A
The helium nucleus has more momentum than the thorium nucleus.
B
The helium nucleus has less kinetic energy than the thorium nucleus.
C
The helium nucleus has more kinetic energy than the thorium nucleus.
D
The helium nucleus has less momentum than the thorium nucleus.
2
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
In the spectrum of hydrogen, the ratio of the longest wavelength in the Lyman series to the longest wavelength in the Balmer series is
A
$${{27} \over 5}$$
B
$${5 \over {27}}$$
C
$${4 \over 9}$$
D
$${9 \over 4}$$
3
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
In the given figure, a diode D is connected to an external resistance R = 100 $$\Omega $$ and an e.m.f. of 3.5 V. If the barrier potential developed across the diode is 0.5 V, the current in the citcuit will be

AIPMT 2015 Physics - Semiconductor Electronics Question 101 English
A
20 mA
B
35 mA
C
30 mA
D
40 mA
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