7000+ TNPSC MCQ - 2

Question: 6

Man-made radioactivity is also known as

(A) Induced radioactivity

(B) Spontaneous radioactivity

(C) Artificial radioactivity

(D) Induced, Artificial radioactivity

Question: 7

Irene Curie and F.Joliot discovered _____ in the year 1934.

(A) Artificial radioactivity

(B) Hydrogen bomb

(C) Fluorescence

(D) Natural radioactivity

Question: 8

The explosion of hydrogen bomb is based on the principle of

(A) Nuclear fusion reaction

(B) Controlled fission

(C) Uncontrolled fission reaction

(D) Photo electric effect

Question: 9

The resistance of material depends on

(A) Area of cross section

(B) Temperature

(C) Length of conductor

(D) All the above

Question: 10

_____ is used to fix the magnitude of the current through a circuit.

(A) Ammeter

(B) Electric resistance

(C) Voltmeter

(D) Resistor