10th Class Physics MCQS
If Current flowing through switch then the output is expressed as:
1
1
2
0
The open switch Boolean expression is represented by:
2
0
10
1
In variable capacitor, dielectric medium is:
Ceramic
Mica
Paper
Air
The process by which electrons are emitted by a hot metal surface is known as:
Boiling
Thermionic emission
Evaporation
Conduction
Electric field lines were introduced by:
Newton
Faraday
Coulomb
Joule
Each volt of lightening contains energy:
1000 million joules
1000 joules
10 joules
4×106 joules
If A input is 1 and B is zero, then in AND operation output will be:
0.1
0
None of these
1
The value of K in SI unit is:
9X109Nm2C2
10X10 9 Nm2C 2
9X1020 Nm2C2
8X109Nm2C2
The particles emitted from a hot cathode surface are:
Negative ions
Positive ions
Electron
Proton
When a positive charge of 2 coulombs is placed at a point in an electric field, it experiences a force of 6N. The intensity of electric field at this point is:
6 NC 1
12 NC 1
1.5 NC 1
3 NC-1
Positive charge in an electric field always tend to move:
From higher to lower potential
Does not move
From lower to higher potential
All of these