Signal becomes zero - Light emitted by screen persists for some time then disappears

Q.  If the bombardment of electrons ceases i.e. when the signal becomes zero then the light emitted by the screen will
- Published on 10 Sep 15

a. Disappear immediately
b. Persist for some time then it will disappear
c. Will not disappear at all
d. None of these

ANSWER: Persist for some time then it will disappear

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  • Shaid   -Posted on 24 Nov 20
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