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Physics 10 Chapter 16 - Basic Electronics - 8
1.
Which axis movement is provided by vertical pair of plates?
a) Horizontal movement
b) No movement
c) X-axis
d) Y-axis
2.
Which axis movement is provided by vertical pair of plates?
a) No movement
b) Y-axis
c) Horizontal movement
d) Vertical movement
3.
Which component of CRO provides the Y-axis or vertical movement of the spot on the screen?
a) Vertical deflecting plates
b) Grid G
c) Horizontal deflecting plates
d) Electron source
4.
Which component of CRO provides the X-axis or horizontal movement of the spot on the screen?
a) Grid G
b) Vertical deflecting plates
c) Horizontal deflecting plates
d) Electron source
5.
The screen of a cathode-ray tube consists of a thin layer of.................?
a) Magnesium
b) Graphite
c) Phosphor
d) Sulphur
6.
Which of the following material gives light as a result of bombardment by fast moving electrons?
a) Magnesium
b) Graphite
c) Phosphor
d) Sulphur
7.
What is given by phosphor as a result of bombardment by fast moving electrons?
a) Sound
b) Nuclear energy
c) Heat
d) Light
8.
In which of the following fields of science, CRO is used?
a) Range-finding
b) Displaying waveforms
c) All of these
d) Measuring voltages
9.
In which of the following fields of science, CRO is used?
a) Echo-sounding
b) All of these
c) To display heartbeats
d) To find the depth of sea beds
10.
The number of electrons reaching the screen of C.R.O. controls the ...........................on the screen light?
a) Brightness
b) Coldness
c) Warmness
d) Darkness
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