The sensation of sound persists in our brain for:
0.1 sec
0.01 sec
1 sec
10 sec
In SI the unit of charge is:
Joule
Volt
Coulomb
Watt
100x103 A= :
10-3 A
10-2 A
10 A
10-1A
What will be the capacitance of capacitor by joining them in parallel:
Increased
Much less
Decrease
No change
Electric potential and e.m.f.:
Are the same terms
Are the different terms
Have different units
Both b and c
An object is placed at the Centre of curvature of a concave mirror. The image produced by the mirror is located:
Out beyond the centre of curvature
At the centre of curvature
Between the centre of curvature and the focal point
At the focal point
Value of âkâ depends upon:
System of unit
Nature of medium
Both a and b
None of these
