- AS.N. Bose
- BNiels Bohr
- CJames clerk Maxwell
- DR. A. Millikan
Explanation:
Niels Bohr introduced the atomic Hydrogen model in 1913.
Neils Bohr developed the Bohr model of the atom, in which he proposed that energy levels of electrons are discrete and that the electrons revolve in stable orbits around the atomic nucleus but can jump from one energy level (or orbit) to another.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Voltage in the secondary coil of a transformer does not depend upon.
|
(a) Voltage in the primary coil |
|
(b) Ratio of number of turns in the two coils |
|
(c) Frequency of the source |
|
(d) Both (a) and (b) |
The electric potential V is given as a function of distance x (metre) by
)volt. Value of electric field at x = 1 is
|
(a) 20 V/m |
(b) 6 V/m |
(c) 11 V/m |
(d) -23 V/m |
A certain charge liberates 0.8 gm of . The same charge will liberate how many gm of silver
|
(a) 108 gm |
(b) 10.8 gm |
(c) 0.8 gm |
(d) |
Consider telecommunication through optical fibres. Which of the following statements is not true
|
(a) Optical fibres may have homogeneous core with a suitable cladding |
|
(b) Optical fibres can be of graded refractive index |
|
(c) Optical fibres are subject to electromagnetic interference from outside |
|
(d) Optical fibres have extremely low transmission loss |
The photoelectric work function for a metal surface is 4.125 eV. The cut-off wavelength for this surface is
|
(a) 4125 Å |
(b) 2062.5 Å |
(c) 3000 Å |
(d) 6000 Å |