| 1 |
Black Body radiation spectrum is an example of: |
Atomic spectra
Line spectra
Continuous spectra
None of above
|
| 2 |
Wave nature of particle was given by: |
Clemensen
Louis de Broglie
Laster H. Germer
Clinton S. Davisson
|
| 3 |
The most refined form of matter is: |
Smoke
Light
Ice
Fog
|
| 4 |
The existence of positron was discovered in: |
1929
1928
1931
1933
|
| 5 |
The converses of annihilation of matter is: |
Photoelectric effect
Relativistic effect
Pair production
Compton effect
|
| 6 |
The minimum energy required for occurrence of pair production is: |
1.022eV
1.02keV
1.02Me.V
1.04MeV
|
| 7 |
When a very high energy modeules such as y radiation interact with matter, the phenomenon arising will be. |
Photoelectric effect
Compton effect
Pair production
Annihilation of matter
|
| 8 |
Albert Einstein got noble prize in: |
1926
1921
1918
1931
|
| 9 |
Albert Einstein got noble prize for service in: |
Pair production
Annihilation of matter theory
Compton effect
Photoelectric effect
|
| 10 |
Minimum energy needed to escape an electron ofrm metal surface is called: |
Threshold energy
Threshold frequency
Work function
Work ability
|
| 11 |
The minimum frequency needed to emit an electron form metal surface is called: |
Work function
Threshold frequency
Quanta frequency
All of above
|
| 12 |
The emission of electrons from metal surface when exposed to light is called: |
Compton effect
Pair production
Photoelectric effect
None of above
|
| 13 |
The unit for Plank's constant is: |
Js<sup>-1</sup>
Jm
Js
Jm<sup>2</sup>
|
| 14 |
Max planck received noble prize in: |
1927
1932
1918
1914
|
| 15 |
The value of Stefan is constant is: |
4.57 x 10<sup>-8</sup> m<sup>2</sup>k<sup>2</sup>
5.67 x10<sup>-8</sup> wm<sup>-2</sup>k<sup>-4</sup>
6.67x 10<sup>-11</sup> wm<sup>2</sup>k<sup>4</sup>
7.45 x 10<sup>-9</sup> m<sup>2</sup> wk<sup>3</sup>
|
| 16 |
The value of Wien's constant: |
2.9x10<sup>-3</sup>mk
2.19x10<sup>-7</sup>mk
3.18 x10<sup>6</sup> km<sup>-1</sup>
6.21 x 10<sup>-9</sup>m<sup>2</sup>wk<sup>3</sup>
|
| 17 |
A block body is an ideal: |
Absorber
Radiator
Both a & b
None of above
|
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