- ASilver
- BGold
- CMercury
- DDiamond
Explanation:
Rutherford performed his alpha particle experiment using a thin gold foil, so that only one atom remain along the thickness of foil.
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In Young’s experiment, the distance between slits is 0.28 mm and distance between slits and screen is 1.4 m. Distance between central bright fringe and third bright fringe is 0.9 cm. What is the wavelength of used light
|
(a) 5000 Å |
(b) 6000 Å |
(c) 7000 Å |
(d) 9000 Å |
An electric dipole of moment
placed in a uniform electric field
has minimum potential energy when the angle between
and
is
|
(a) Zero |
(b) |
(c) π |
(d) |
A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is
|
(a) Charge Q |
(b) Potential V |
(c) Capacity C |
(d) Energy U |
If two streams of protons move parallel to each other in the same direction, then they
|
(a) Do not exert any force on each other |
|
(b) Repel each other |
|
(c) Attract each other |
|
(d) Get rotated to be perpendicular to each other |
A full wave rectifier circuit along with the input and output voltages is shown in the figure
The critical angle for a medium is 60°. The refractive index of the medium is (a) (b) (c) (d) →
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