- AMomentum
- BAngular velocity
- CPotential energy
- DAngular momentum
Explanation:
Bohr's hypothesis
Electrons revolves round the nucleus in water orbits.
Orbit of the electron around the nucleus can take only some special values of radius.
The energy of the atom as a definite value in these orbits.
In this Orbits, Angular momentum (e) of the electron is integral multiple of the plank's constant h divided by 2n
$\text{i.e. l}=\text{n}\frac{\text{h}}{2\text{n}}.$
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In Millikan's experiment for the determination of the charge on the electron, the reason for using the oil is
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(a) It is a lubricant |
(b) Its density is higher |
|
(c) It vapourises easily |
(d) It does not vapourise |
The dispersive power is maximum for the material
|
(a) Flint glass |
(b) Crown glass |
(c) Mixture of both |
(d) None of the above |
For a given surface the Gauss's law is stated as
From this we can conclude that
|
(a) E is necessarily zero on the surface |
|
(b) E is perpendicular to the surface at every point |
|
(c) The total flux through the surface is zero |
|
(d) The flux is only going out of the surface |