- ABlack hole theory
- BNeutron star theory
- CWhite dwarf
- DRed shift
Explanation:
When an object moves away from us, its light waves are stretched into lower frequencies or longer wavelengths, and we say that the light is redshifted. It also explain the expanding nature of universe.
Doppler effect in light explains the phenomenon of receding of stars and approaching of star by red shift and blue shift respectively.
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In an atomic bomb, the energy is released due to
|
(a) Chain reaction of neutrons and |
|
(b) Chain reaction of neutrons and |
|
(c) Chain reaction of neutrons and |
|
(d) Chain reaction of neutrons and |
Order of q/m ratio of proton, α -particle and electron is
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(a) e > p > α |
(b) p > α > e |
(c) e > α > p |
(d) None of these |
The unit of intensity of electric field is
|
(a) Newton/Coulomb |
(b) Joule/Coulomb |
(c) Volt - metre |
(d) Newton/metre |
The neutron was discovered by
|
(a) Marie Curie |
(b) Pierre Curie |
(c) James Chadwick |
(d) Rutherford |
The fact that electric charges are integral multiples of the fundamental electronic charge was proved experimentally by
|
(a) Planck |
(b) J.J. Thomson |
(c) Einstein |
(d) Millikan |