10th Class Physics MCQS
The symbol of atomic mass number is:
X
Z
A
N
for which of following ampere second could be the unit:
energy
charge
power
current
When we double the voltage in a simple electric circuit, we double the:
Power
Resistance
Current
Both a and b
When resistances are connected in parallel, the current passing through them is:
Different
Zero
Same
Infinite
When a potential of 10 volt is applied across a conductor, a current of 5 miliampere flows through it, the resistance of the conductor will be:
2000 ohm
0.2 ohm
200 ohm
0.002 ohm
For observing how fast plants are absorbing phosphate fertilizer we use.
Ph -32
I.131
Ar 40
Co 60
Which particles are nucleons?
Electrons and protons
Protons and neutrons
Electrons and positrons
Electrons and neutrons
The colour of live wire is:
White or grey
Black or blue
Green or yellow
Red or brown
Radiation was found in:
1898
1897
1896
1895
What is the power rating of a lamp connector to a 12 V source when it carries 2.5 A:
14.5W
4.8W
30W
60W
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