In hydrogen atom which quantity is integral multiple of
|
(a) Angular momentum |
(b) Angular velocity |
|
(c) Angular acceleration |
(d) Momentum |
In hydrogen atom which quantity is integral multiple of
|
(a) Angular momentum |
(b) Angular velocity |
|
(c) Angular acceleration |
(d) Momentum |
(a) Angular momentum
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The process by which a heavy nucleus splits into light nuclei is known as
|
(a) Fission |
(b) α- decay |
(c) Fusion |
(d) Chain reaction |
Consider the two following statements A and B and identify the correct choice given in the answers;
(A) In photovlotaic cells the photoelectric current produced is not proportional to the, intensity of incident light.
(B) In gas filled photoemissive cells, the velocity of photoelectrons depends on the wavelength of the incident radiation.
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(a) Both A and B are true |
(b) Both A and B are false |
|
(c) A is true but B is false |
(d) A is false B is true |
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 |
A bright star is indicated to have a brightness magnitude of – 5 compared to a star of brightness zero magnitude. It means that this star compared to the reference star of zero brightness is
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(a) 100 times less bright |
(b) 5 times more bright |
|
(c) 5 times less bright |
(d) 100 times more bright |
Barrier potential of a P-N junction diode does not depend on
|
(a) Temperature |
(b) Forward bias |
(c) Doping density |
(d) Diode design |