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1.
Column-I Column-II
[A] Hydrogen bomb (1) Fission
[B] Atom bomb (2) Fusion
[C] Binding energy (3) Critical mass
[D] Nuclear reactor (4) Mass defect
[A] Hydrogen bomb (1) Fission
[B] Atom bomb (2) Fusion
[C] Binding energy (3) Critical mass
[D] Nuclear reactor (4) Mass defect
2.
Which of the following statements is/are correct?
I. Pure Si doped with trivalent impurities gives a p-type semiconductor
II. Majority carriers in a n-type semiconductor are holes
III. Minority carriers in a p-type semiconductor are electrons
IV. The resistance of intrinsic semiconductor decreases with increase of temperature
I. Pure Si doped with trivalent impurities gives a p-type semiconductor
II. Majority carriers in a n-type semiconductor are holes
III. Minority carriers in a p-type semiconductor are electrons
IV. The resistance of intrinsic semiconductor decreases with increase of temperature
3.
The active component in an IC are
4.
The waves used in telecommunication are
5.
Audio signal cannot be transmitted because
6.
Television signals are
7.
Repeaters used in telephone links are:
8.
The transistor are usually made of
9.
A moderator is used in nuclear reactors in order to
10.
The main constituent of biogas is