Given three equal resistors, how many different combination of all the three resistors can be made
|
(a) Six |
(b) Five |
(c) Four |
(d) Three |
Given three equal resistors, how many different combination of all the three resistors can be made
|
(a) Six |
(b) Five |
(c) Four |
(d) Three |
(c) Four
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The radius of the orbital of electron in the hydrogen atom 0.5 Å. The speed of the electron is 2
. Then the current in the loop due to the motion of the electron is
|
(a) 1 mA |
(b) 1.5 mA |
(c) 2.5 mA |
(d) 1.5 |
Name of the India's first nuclear reactor is
|
(a) RAMBHA |
(b) MENAKA |
(c) URVASI |
(d) APSARA |
Which one is correct relation for thermionic emission
|
(a) |
(b) |
(c) |
(d) |
When a ray of light emerges from a block of glass, the critical angle is
|
(a) Equal to the angle of reflection |
|
(b) The angle between the refracted ray and the normal |
|
(c) The angle of incidence for which the refracted ray travels along the glass-air boundary |
|
(d) The angle of incidence |
The image formed behind a mirror and a virtual image:
The charges on two sphere are +7mC and – 5mC respectively. They experience a force F. If each of them is given and additional charge of – 2mC, the new force of attraction will be
|
(a) F |
(b) F / 2 |
(c) F/ |
(d) 2F |
The state of the energy gained by valance electrons when the temperature is raised or when electric field is applied is called as
|
(a) Valance band |
(b) Conduction band |
(c) Forbidden band |
(d) None of these |
Energy of the electron in nth orbit of hydrogen atom is given by
. The amount of energy needed to transfer electron from first orbit to third orbit is
|
(a) 13.6 eV |
(b) 3.4 eV |
(c) 12.09 eV |
(d) 1.51 eV |