1
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
A convex lens and a concave lens, each having same focal length of 25 cm, are put in contact to form a combination of lenses. The power in diopters of the combination is
A
zero
B
25
C
50
D
infinite.
2
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
The momentum of a photon of energy 1 MeV in kg m/s will be
A
5 $$ \times $$ 10$$-$$22
B
0.33 $$ \times $$ 106
C
7 $$ \times $$ 10$$-$$24
D
10$$-$$22
3
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
The binding energy of deuteron is 2.2 MeV and that of $${}_2^4$$He is 28 MeV. If two deuterons are fused to form one $${}_2^4$$He then the energy released is
A
30.2 MeV
B
25.8 MeV
C
23.6 MeV
D
19.2 MeV
4
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
The following figure shows a logic gate circuit with two inputs A and B and the output C.

AIPMT 2006 Physics - Semiconductor Electronics Question 64 English 1

The voltage waveforms of A, B and C are as shown below.

AIPMT 2006 Physics - Semiconductor Electronics Question 64 English 2

The logic circuit gate is
A
OR gate
B
AND gate
C
NAND gate
D
NOR gate