| LIST I | LIST II | ||
|---|---|---|---|
| A. | Intrinsic semiconductor | I. Used as a rectifier circuit | |
| B. | N-Type Semiconductor | II. Pure form of Semiconductor | |
| C. | P-Type Semiconductor | III. Doping of pentavalent impurity in semiconductor | |
| D. | P-N Junction diode | IV. Doping of trivalent impurity in semiconductor |
The general equation of a sphere can be written in the form: \[(x - h)^2 + (y - k)^2 + (z - l)^2 = r^2\] where \( h \), \( k \), and \( l \) are the coordinates of the center, and \( r \) is the radius. The radius is obtained by completing the square for each term.


Consider the following four words, out of which three are alike in some manner and one is different.
(A) Arrow
(B) Missile
(C) Sword
(D) Bullet
Choose the combination that has alike words.