Table of Contents
- 1 What is the threshold wavelength of a metal having work function 2 eV?
- 2 How do you find the threshold wavelength of a work function?
- 3 What is the stopping potential when metal with work function 0.6 EV?
- 4 What will be the photoelectric current if the frequency is halved and intensity is doubled?
- 5 What was the threshold wavelength for potassium?
- 6 What is the threshold wavelength for the photoelectric effect with potassium?
- 7 What is the threshold frequency of silver in EV?
- 8 What is threshold frequency and threshold wavelength?
What is the threshold wavelength of a metal having work function 2 eV?
6000 Å
The threshold wavelength of a metal having work function 2 eV is 6000 Å .
How do you find the threshold wavelength of a work function?
The frequency of the light for which its energy is equal to the work function is called threshold frequency ν0. Therefore, ϕ=hν0. Let us use the relation between the frequency and the wavelength of light, i.e. ν=cλ. When the light wave has threshold frequency, its wavelength is called threshold wavelength (λ0).
What is the corresponding threshold wavelength of a metal if its Workfunction of is 2.2 eV?
W=2.2 eV=2.2×1.6×.
What is the formula of threshold wavelength?
To Find: Threshold wavelength of metal = λo =? The frequency of incident light is less than the threshold frequency. No photoelectrons will be emitted from the metal surface. Ans: The threshold frequency is 1.2 x 1015 Hz and no photoelectron will be emitted.
What is the stopping potential when metal with work function 0.6 EV?
The stopping potential is 1.4 V.
What will be the photoelectric current if the frequency is halved and intensity is doubled?
If the frequency is halved and intensity is doubled, what happens to photoelectric current? times the threshold frequency. Hence, photoelectric current will be zero.
What is threshold wavelength and work threshold frequency?
Threshold Frequency: The threshold frequency is that minimum frequency of light below which the photoelectrons do not emit. Work function: The least energy which can eject the electrons from the surface of the metal.
What is the threshold frequency for potassium answer in units of Hz?
3 × 1014 Hz
The threshold frequency of potassium is 3 × 1014 Hz.
What was the threshold wavelength for potassium?
The threshold wavelength for potassium is 620 nm.
What is the threshold wavelength for the photoelectric effect with potassium?
558 nm
The threshold wavelength of potassium is 558 nm.
What will be the stopping potential When a photon of 25 eV is incident on metal surface of work function 6ev?
The energy of the photon incident on the metal surface is 25 eV out of which 7 eV is used for knocking out the electron, the rest 18 eV goes into being the KE of the emitted electron. So atleast 18 V of potential is applied to stop the electron and hence the stopping potential is 18V.
What is the photoelectric threshold wavelength for potassium?
The photoelectric threshold wavelength for potassium (work function being 2 eV) is 12th
What is the threshold frequency of silver in EV?
Ans: The threshold frequency of silver is 8 x 10 14 Hz and its threshold wavelength is 3750 Å A light of wavelength 4800 Å can just cause photoemission from a metal. What is the photoelectric work function for metal in eV?
What is threshold frequency and threshold wavelength?
The threshold wavelength ( more commonly threshold frequency) is the wavelength/ frequency of a photon with just sufficient energy to liberate an electron. The work function of a substance is 4 eV. What will the threshold wavelength will be?
What is the threshold frequency of platinum?
Ans: The threshold frequency of metal is 4.827 x 10 14. The photoelectric work function of platinum is 6.3 eV and the longest wavelength that can eject photoelectron from platinum is 1972 Å. Calculate the Planck’s constant.