10th Class Physics MCQS
According to Ohm’s law V =________
IR
IR2
I2R
I/R
The mirror whose inner surface is reflecting is called:
Concave mirror
Lens
Convex mirror
Mirror
Electric current in conductors is due to the flow of:
Free electrons
Positive ions
Positive charge
Negative ions
The critical angle for a beam of light passing from water into air is 48.8 degrees. This mean that all light rays with an angle of incidence greater than this angle will be:
Absorbed
Totally reflected
Partially reflected and partially transmitted
Totally transmitted
The S.I unit of potential difference is:
Ampere
Volt
Watt
Coulomb
Example of mechanical waves is:
Light waves
Radio waves
X rays
Sound waves
The speed of sound in a liquid is _____..than that in gases:
Fifteen times
Five times
Two times
Ten times
What is the voltage across a 6? resister when 3A current passes through it?
18V
9V
2V
36V
How Galvanometer is connected in circuit to detect current?
Fixed
In Parallel
Variable
In Series
The S.I unit of electric current is:
Coulomb
Volt
Watt
Ampere
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