10th Class Physics MCQS
In the presence of a charged body, an insulated conductor develops positive charge at one end and negative charge at the other end, this i called:
Electromagnetic induction
Electrostatic induction
Magnetism
Electrostatics
At room temperature, electrons cannot escape the metal surface due to _____.. of atomic nucleus:
Repulsive forces
Attractive forces
Gravitational forces
Electromagnetic forces
The intensity level of whispering is:
40 dB
20 dB
30 dB
50 dB
The SI unit of electric field intensity is:
NC-1
NC 2
Ns
Nm 1
The speed of sound was accurately measured in:
1736
1739
1737
1738
One coulomb is equal to charge of ________ electrons.
6.25 x 1019
6.25 x 10 18
6.25 x 1018
6.25 x 10 19
A positive electric charge:
Attracts a neutral charge
Attracts other positive charge
Repels other positive charge
Repels a neutral chage
The speed of sound in air at 0°C is:
231ms 1
331ms-1
376ms 1
386ms 1
Big unit of capacitance is:
coulomb
Farad
watt
Volt
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