- AIncreases
- BDecreases
- CRemains constant
- DBecomes zero
Explanation:
As the battery remains connected across the capacitor, so the potential difference remains constant at V0 even after the introduction of the dielectric slab. In this way, dielectric has an effect on potential difference.
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For a real object, which of the following can produced a real image
|
(a) Plane mirror |
(b) Concave lens |
(c) Convex mirror |
(d) Concave mirror |
In Young's double slit experiment, the intensity on the screen at a point where path difference is l is K. What will be the intensity at the point where path difference is λ/4
|
(a) |
(b) |
(c) K |
(d) Zero |
Two wires of equal diameters, of resistivities
and
and lengths l1 and l2, respectively, are joined in series. The equivalent resistivity of the combination is
|
(a) |
(b) |
(c) |
(d) |
A star which appears blue will be
|
(a) As hot as the sun |
(b) Cooler than the sun |
|
(c) Very cold indeed |
(d) Much hotter than the sun |
The distance between the extreme points on the periphery of the mirror is called:
Consider a radioactive material of half-life 1.0 minute. If one of the nuclei decays now, the next one will decay
|
(a) After 1 minute |
|
(b) After |
|
(c) After |
|
(d) After any time |