Electron volt is a unit of
|
(a) Potential |
(b) Charge |
(c) Power |
(d) Energy |
Electron volt is a unit of
|
(a) Potential |
(b) Charge |
(c) Power |
(d) Energy |
(d) Energy
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A combination of two thin lenses of the same material with focal lengths
and
, arranged on a common axis minimizes chromatic aberration, if the distance between them is
|
(a) |
(b) |
(c) ( |
(d) |
In the circuit shown here, E1 = E2 = E3 = 2 V and R1 = R2 = 4 ohms. The current flowing between points A and B through battery E2 is
|
(a) Zero |
(b) 2 amp from A to B |
|
(c) 2 amp from B to A |
(d) None of the above |
Two long wires are hanging freely. They are joined first in parallel and then in series and then are connected with a battery. In both cases, which type of force acts between the two wires
|
(a) Attraction force when in parallel and repulsion force when in series |
|
(b) Repulsion force when in parallel and attraction force when in series |
|
(c) Repulsion force in both cases |
|
(d) Attraction force in both cases |
Three capacitors each of capacitance 1μF are connected in parallel. To this combination, a fourth capacitor of capacitance 1μF is connected in series. The resultant capacitance of the system is
|
(a) 4μF |
(b) 2μF |
(c) |
(d) |
Equal charges are given to two spheres of different radii. The potential will
|
(a) Be more on the smaller sphere |
|
(b) Be more on the bigger sphere |
|
(c) Be equal on both the spheres |
|
(d) Depend on the nature of the materials of the spheres |