| 1 |
Which one of the following paved the way for modern physics |
- A. Newtonian mechanics
- B. Theory of relativity
- C. Quantum theory
- D. All of above
|
| 2 |
Photo electrons are emitted y using visible light when the metal is. |
- A. sodium
- B. Copper
- C. Nicked
- D. Cobalt
|
| 3 |
A block body is an ideal: |
- A. Absorber
- B. Radiator
- C. Both a & b
- D. None of above
|
| 4 |
The uncertainty principle was given by |
- A. De-Broglie
- B. Heisenberg
- C. Einstein
- D. Max Planck
|
| 5 |
The photoelectric effect predicts that light is made of |
- A. Photons
- B. Neutrons
- C. Protons
- D. None of these
|
| 6 |
Light of 4.5 eV is incident on a Cesium surface and stopping potential is 0.25 eV, maximum K.E. of emitted electron is. |
- A. 4.5 eV
- B. 4.25 eV
- C. 4.75 eV
- D. 0.25 eV
|
| 7 |
In 1905, the special theory of relativity was proposed by |
- A. Einstein
- B. Bohr
- C. Maxwell
- D. De Broglie
|
| 8 |
Einstein was awarded Nobel prize in physics in |
- A. 1905
- B. 1911
- C. 1918
- D. 1921
|
| 9 |
Maximum Compton shift is observed at. |
- A. 30<sup>o</sup>C
- B. 90<sup>o</sup>C
- C. 45<sup>o</sup>C
- D. 180<sup>o</sup>C
|
| 10 |
The minimum frequency needed to emit an electron form metal surface is called: |
- A. Work function
- B. Threshold frequency
- C. Quanta frequency
- D. All of above
|
