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Q.

T.V. tube is basically a ………… tube and what we see on screen is related with ……. supply the missing terms in respective order

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a

Cathode ray ,  phosphorescence 

b

anode ray, fluorescence

c

glass tube, luminescence

d

all of these

answer is A.

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Detailed Solution

Television picture tubes are cathode ray tubes and TV pictures result due to phosphorescence (or) fluorescence on the television screen coated with certain fluorescent  or phosphorescent materials.

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T.V. tube is basically a ………… tube and what we see on screen is related with ……. supply the missing terms in respective order