| 1 |
Einstein photoelectric equation is |
None of these
|
| 2 |
In the equation if f2 > then |
|
| 3 |
If the energy of photon is 10 eV and work function is 5 eV, then the a value of stopping potential will be |
50 V
2 V
5 V
15 V
|
| 4 |
The unit of work function is |
Electron volt
Ampere
Volt cell
Hz
|
| 5 |
The photoelectric effect predicts that light is made of |
Photons
Neutrons
Protons
None of these
|
| 6 |
The uncertainty principle was given by |
De-Broglie
Heisenberg
Einstein
Max Planck
|
| 7 |
|
Wien's constant
Planck's constant
Davison constant
Lumber's constant
|
| 8 |
Which one of the following physical quantities change with relativistic speed? |
Length
Time
Mass
All of above
|
| 9 |
The concept of direction is purely |
Relative
Absolute
Relative to the motion
None of these
|
| 10 |
Which one of the following paved the way for modern physics |
Newtonian mechanics
Theory of relativity
Quantum theory
All of above
|
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