1
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Change Language
Consider 3rd orbit of He+ (Helium), using non-relativistic approach, the speed of electron in this orbit will be [given K = 9 $$ \times $$ 109 constant, Z = 2 and h (Planck's Constant) = 6.6 $$ \times $$ 10$$-$$34 J s]
A
0.73 $$ \times $$ 106 m/s
B
3.0 $$ \times $$ 108 m/s
C
2.92 $$ \times $$ 106 m/s
D
1.46 $$ \times $$ 106 m/s
2
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Change Language
Which logic gate is represented by the following combination of logic gates ?

AIPMT 2015 Cancelled Paper Physics - Semiconductor Electronics Question 100 English
A
AND
B
NOR
C
OR
D
NAND
3
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Change Language
If in a p-n junction, a square input signal of 10 V is applied, as shown,

AIPMT 2015 Cancelled Paper Physics - Semiconductor Electronics Question 99 English

then the output across RL will be
A
AIPMT 2015 Cancelled Paper Physics - Semiconductor Electronics Question 99 English Option 1
B
AIPMT 2015 Cancelled Paper Physics - Semiconductor Electronics Question 99 English Option 2
C
AIPMT 2015 Cancelled Paper Physics - Semiconductor Electronics Question 99 English Option 3
D
AIPMT 2015 Cancelled Paper Physics - Semiconductor Electronics Question 99 English Option 4
4
AIPMT 2015 Cancelled Paper
MCQ (Single Correct Answer)
+4
-1
Change Language
A mass m moves in a circle on a smooth horizontal plane with velocity v0 at a radius R0. The mass is attached to a string which passes through a smooth hole in the plane as shown. the tension in the string is increased gradually and finally m moves in a circle of radius $${{{R_0}} \over 2}$$.

The final value of the kinetic energy is
AIPMT 2015 Cancelled Paper Physics - Rotational Motion Question 71 English
A
2mv$$_0^2$$
B
$${1 \over 2}$$mv$$_0^2$$
C
mv$$_0^2$$
D
$${1 \over 4}$$mv$$_0^2$$
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