1
AIPMT 2014
MCQ (Single Correct Answer)
+4
-1
Change Language
Certain quantity of water cools from 70oC to 60oC in the first 5 minutes and to 54oC in the next 5 minutes. The temperature of the surroundings is
A
45oC
B
20oC
C
42oC
D
10oC
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 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.
4
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 54 English Option 1
B
AIPMT 2014 Physics - Gravitation Question 54 English Option 2
C
AIPMT 2014 Physics - Gravitation Question 54 English Option 3
D
AIPMT 2014 Physics - Gravitation Question 54 English Option 4