Advertisements
Advertisements
Question
In photoelectric emission, a radiation whose frequency is 4 times threshold frequency of a certain metal is incident on the metal. Then the maximum possible velocity of the emitted electron will be
Options
`sqrt(("hv"_0)/"m")`
`sqrt((6"hv"_0)/"m")`
`2sqrt(("hv"_0)/"m")`
`sqrt(("hv"_0)/(2"m"))`
Advertisements
Solution
`sqrt((6"hv"_0)/"m")`
APPEARS IN
RELATED QUESTIONS
The threshold wavelength for a metal surface whose photoelectric work function is 3.313 eV is __________.
The work functions for metals A, B and C are 1.92 eV, 2.0 eV and 5.0 eV respectively. The metal/metals which will emit photoelectrons for a radiation of wavelength 4100Å is/are
Give the definition of intensity of light according to quantum concept and its unit.
Define stopping potential.
Explain the quantum concept of light.
Explain experimentally observed facts of the photoelectric effect with the help of Einstein’s explanation.
List out the characteristics of photons.
Give the applications photocell.
How many photons per second emanate from a 50 mW laser of 640 nm?
Calculate the energies of the photons associated with the following radiation:
- violet light of 413 nm
- X-rays of 0.1 nm
- radio waves of 10 m
