1
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
Dependence of intensity of gravitational field (E) of earth with distance (r) from centre of earth is correctly represented by
A
AIPMT 2014 Physics - Gravitation Question 53 English Option 1
B
AIPMT 2014 Physics - Gravitation Question 53 English Option 2
C
AIPMT 2014 Physics - Gravitation Question 53 English Option 3
D
AIPMT 2014 Physics - Gravitation Question 53 English Option 4
2
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
3
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
The barrier potential of a p-n junction depends on
(1)   type of semiconductor material
(2)   amount of doping

(3)   temperature

Which one of the following is correct ?
A
(1) and (2) only
B
(2) only
C
(2) and (3) only
D
(1), (2) and (3)
4
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
A certain number of spherical drops of a liquid of radius r coalesce to form a single drop of radius R and volume V. If T is the surface tension of the liquid, then
A
energy = 4VT $$\left( {{1 \over r} - {1 \over R}} \right)$$ is released.
B
energy = 3VT$$\left( {{1 \over r} + {1 \over R}} \right)$$ is absorbed.
C
energy = 3VT$$\left( {{1 \over r} - {1 \over R}} \right)$$ is released
D
energy is neither released nor absorbed.
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