1
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
The binding energy per nucleon of and nuclei are 5.60 MeV and 7.06 MeV respectively. In the nuclear reaction

$${}_3^7Li + {}_1^1H \to {}_2^4He + _2^4He + Q$$

the value of energy Q released is
A
19.6 MeV
B
$$-$$ 2.4 MeV
C
8.4 MeV
D
17.3 MeV
2
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
The given graph represents V-I characteristic for a semiconductor device.

AIPMT 2014 Physics - Semiconductor Electronics Question 103 English

Which of the following statement is correct ?
A
It is V-I characteristic for solar cell where, point A represents open circuit voltage and point B short circuit current.
B
It is for a solar cell and popints A and B represent open circuit voltage and current, respectively.
C
It is for a photodiode and points A and B represent open circuit voltage and current, respectively.
D
It is for a LED and points A and B represent open circuit voltage and short circuit current, respectively.
3
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
A black hole is an object whose gravitational field is so strong that even light cannot escape from it. To what approximate radius would earth (mass = 5.98 $$ \times $$ 1024 kg) have to be compressed to be a black hole?
A
10$$-$$9 m
B
10$$-$$6 m
C
10$$-$$2 m
D
100 m
4
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
A body of mass (4m) is lying in x-y plane at rest. It suddenly explodes into three pieces. Two pieces, each of mass (m) move perpendicular to each other with equal speeds (v). The total kinetic energy generated due to explosion is :
A
mv2
B
$${3 \over 2}$$mv2
C
2mv2
D
4mv2