In an experiment on the photoelectric ef...

In an experiment on the photoelectric effect , the slope of the cut - off voltage versus frequency of incident light is found to be `4.12xx10^(-15) V` s . The value of Planck's constant is

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`6.59xx10^(-34)Js`

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In an experiment on photoelectric effect, the slope of the cut-off voltage versus frequency of incident light is found to be 4.12xx10^(-15)V s. Calculate the value of Planck's constant.

The above graph shows frequency of an incident photon and maximum kinetic energy of a photoelectric effect a. What is the value of threshold frequency and threshold wave-length? b. What is the work function of the cathode in eV? c. Find the maximum kinetic energy, if the frequency of photon is 9xx10^(14) Hz. d. Also find the value of Planck's constant (h).

In an experiment on photoelectric effect, the stopping potential is measured for monochromatic light beams corresponding to different wavelength. The data collected are as follows: wavelength (nm): 350 400 450 500 550 stopping potential (V): 1.45 1.00 0.66 0.38 0.16 Plot the stopping potential against inverse of wavelength on a graph paper and find (a) the Planck constant, (b) the work function of the emitter and (c) the threshold wavelength .

In a photoelectric experiment, it was found that the stopping potential decreases from 1.85 V to 0.82 V as the wavelength of the incident light is varied from 300nm to 400nm. Calculate the value of the Planck constant from these data.

In an experiment on photoelectric effect light of wavelength 400 nm is incident on a metal plate at rate of 5W. The potential of the collector plate is made sufficiently positive with respect to emitter so that the current reaches the saturation value. Assuming that on the average one out of every 10^6 photons is able to eject a photoelectron, find the photocurrent in the circuit.

In an experiment on photoelectric effect, the emitter and the collector plates are placed at a separation of 10cm and are connected through an ammeter without any cell. A magnetic field B exists parallel to the plates. The work function of the emitter is 2.39 e V and the light incident on it has wavelengths between 400nm and 600nm. Find the minimum value of B for which the current registered by the ammeter is zero. Neglect any effect of space charge.

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