Dual Nature Of Radiation And Matter

- It is always better to start confident. Let's practice easy questions to serve the purpose
1
What happens to the stopping potential if the distance between the source and the emitting material increases.
2
What does the slope of a straight line graph between stopping potential and frequency of incident light signifies? Let's discuss.
3
Effect of a glass plate between a lamp and photoelectric cell.
A quartz lamp with iodine vapour releases ultraviolet light which falls on a photoelectric cell. If a thick glass plate is now introduced between the lamp and photoelectric cell then:
A
the photoelectric current increases
B
the maximum kinetic energy of photoelectrons decreases
C
the photoelectric current decreases
D
the maximum kinetic energy of photoelectrons increases
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8
Calculation of De-Broglie wavelength
If we assume that penetrating power of any radiation/particle is inversely proportional to the De-broglie wavelength of the particle, then
A
A proton and an particle after getting accelerated through same potential difference will have equal penetrating power.
B
Penetrating power of particle will be greater than that of proton which have been accelerated by same potential difference.
C
Proton's penetrating power will be less than penetrating power of an electron which has been accelerated by the same potential difference.
D
Penetrating powers can not be compared as all these are particles having no wavelength or wave nature.
9
Concept of energy of photons in a photoelectric emission