1
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
If $${M_O}$$ is the mass of an oxygen isotope $${}_8{O^{17}}$$ , $${M_p}$$ and $${M_N}$$ are the masses of a proton and neutron respectively, the nuclear binding energy of the isotope is
A
$$\left( {{M_O} - 17{M_N}} \right){C^2}$$
B
$$\left( {{M_O} - 8{M_P}} \right){C^2}$$
C
$$\left( {{M_O} - 8{M_P} - 9{M_N}} \right){C^2}$$
D
$${{M_O}{c^2}}$$
2
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
If in a $$p$$-$$n$$ junction diode, a square input signal of $$10$$ $$V$$ is applied as shown AIEEE 2007 Physics - Semiconductor Question 179 English

Then the output signal across $${R_L}$$ will be

A
AIEEE 2007 Physics - Semiconductor Question 179 English Option 1
B
AIEEE 2007 Physics - Semiconductor Question 179 English Option 2
C
AIEEE 2007 Physics - Semiconductor Question 179 English Option 3
D
AIEEE 2007 Physics - Semiconductor Question 179 English Option 4
3
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
Carbon, silicon and germanium have four valence electrons each. At room temperature which one of the following statements is most appropriate ?
A
The number of free electrons for conduction is significant only in $$Si$$ and $$Ge$$ but small in $$C.$$
B
The number of free conduction electrons is significant in $$C$$ but small in $$Si$$ and $$Ge.$$
C
The number of free conduction electrons is negligibly small in all the three.
D
The number of free electrons for conduction is significant in all the three
4
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
Which of the following transitions in hydrogen atoms emit photons of highest frequency ?
A
$$n = 1$$ to $$n=2$$
B
$$n = 2$$ to $$n=6$$
C
$$n = 6$$ to $$n=2$$
D
$$n = 2$$ to $$n=1$$
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