MCQ
Which of these is unipolar transistor
- APoint contact transistor
- ✓Field effect transistor
- C$PNP$ transistor
- DNone of these
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Which of the following statements is true ?
A. $As$ impurity is mixed in $Si$
B.$Al$ impurity is mixed in $Si$
C.$B$ impurity is mixed in $ Ge$
D.$P$ impurity is mixed in $Ge$
(Round off to the Nearest Integer)
Statement $-1$ : A capillary is dipped in a liquid and liquid rises to a height $h$ in it. As the temperature of the liquid is raised, the height $h$ increases (if the density of the liquid and the angle of contact remain the same).
Statement $-2$ : Surface tension of a liquid decreases with the rise in its temperature.