TNPSC Atomic Nuclear Physics Objective Questions Answers - 3

Question: 11

When canal rays pass through the gas, they ___ the gas.

(A) Neutralize

(B) Condense

(C) Compress

(D) Ionize

Ans: D

Ionize

Question: 12

The cathode rays are ____

(A) The same as canal rays

(B) A stream of uncharged particles

(C) A stream of positive ions

(D) A stream of electrons

Ans: D

A stream of electrons

Question: 13

The chromium ions doped in the ruby rod ____

(A) Absorbs red light

(B) Absorbs green light

(C) Absorbs blue light

(D) Emits green light

Ans: B

Absorbs green light

Question: 14

At atmospheric pressure which of the following are poor conductors of electricity?

(A) Metals

(B) Air and other gases

(C) Copper

(D) Aluminum

Ans: B

Air and other gases

Question: 15

Cathode rays travel in ___

(A) Curved paths

(B) Parabolic paths

(C) Straight lines

(D) Circular paths

Ans: C

Straight lines

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