10th Class Physics MCQS
The resistance of conductors is due to:
Fixed atoms
Molecules
Protons
Neutrons
Mathematical formula of electromotive force (e.m.f) is:
E = WQ
E = W2Q
E = W/Q
E = Q/W
In medical field, C.R.O is used to display:
Pictures of organs
Pictures of bones
Blood pressure
Heart beats
The equivalent resistance of a parallel combination is
is greater than the largest resistance of combination
is smaller than the smallest resistance of combination
All of these
equal to sum of all resistance
We can distinguish between the notes of a piano and flute due to _____ of sound.
Loudness
Pitch
Quality
Intensity
Which type of image is formed by a convex lens on a screen:
Upright and virtual
Upright and real
Inverted and real
Inverted and virtual
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 focal point
Between the centre of curvature and the focal point
At the centre of curvature
The unit of potential difference is:
Coulomb
Volt
Ampere
Joule
Battery converts chemical energy into which energy:
Electrical
Mechanical
None of these
Thermal
What type of graph is in between V and I?
Curved
None of these
Straight line
Parabola
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