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# 10th Class Chapter 7 Physics Short Questions

An important facility for 10th class students preparing for short questions physics 10th class chapter 7 of BISE. Get hundreds of questions to prepare and get better marks in 10th physics

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##### Question: 1
What is the use of grid in cathode ray oscilloscope.
1-18
In the electron gun the grid is used to control the flow of electron, thus control brightness on fluorescent screen.
##### Question: 2
Explain the uses of logic gates.
2-18
Logic gates in electronic circuits are used to do useful tasks. These circuits usually use light depending resistors to keep inputs LOW. an LDR can act as a switch that is closed when illuminated by light and open in dark.
##### Question: 3
How digital electronic devices work.
3-18
Digital electronics devices store and process bites electronically.
##### Question: 4
What are the values of Boolean variables.
4-18
Boolean variables can have only two values 0 and 1
##### Question: 5
What are digital quantities.
5-18
Digital quantities. Quantities whose values vary in non continuous manner are called digital quantities. Digital quantities are expressed in form of digits or numbers.
##### Question: 6
In oscilloscope how filament is heated.
6-18
In oscilloscope filament is heated electrically. When filament is connected to voltage source, current passses through filament and get heated.
##### Question: 7
Write some benefits of using digital electronic over analogue electronic.
7-18
i. There is no interference in digital signal
ii. Its easy to read digital quantities.
##### Question: 8
Name two factors which can enhance thermionic emission .
8-18
i. Increasing strength of the battery and voltage.
ii. By increasing temperature.
##### Question: 9
What is meant by Boolean algebra?
9-18
It is a branch of mathematics which deals with the relationships of logic variables.
##### Question: 10
Give the examples of cathode ray tubes from yu daily life.
10-18
The picture in our T.V. set and display terminal of most computes are cathode ray tubes.
##### Question: 11
Define analogy quantities.
11-18
quantities whose values very in continuously or remain constant are known as analogue quantities.
Example: Temperature, time, pressure, distance and analogue quantities.
##### Question: 12
What is cathode ray oscilloscope?
12-18
An instrument which is used to display the magnitude of rapidly changing electric current or potential.
##### Question: 13
What is a cathode ray tube?
13-18
A vacuum tube used to accelerate electrons which emit from the cathode by applying high voltage between cathode and anode is called ray tube.
##### Question: 14
What is the use of electron gun.
14-18
It is used to investigate the properties of electron beam.
##### Question: 15
Why a large potential is applied between anode and cathode.
15-18
A large potential is applied between anode and cathode to accelerate the beam of electrons.
##### Question: 16
NAND gate is the reciprocal of AND gate discuss.
16-18
NAND gate is formed when AND and NOT gate are connected one after the other .If AND gate show 0 output, then NAND gate will show 1 output. So we can say NAND agate is reciprocal of AND gate.
##### Question: 17
Why filament is heated.