A beam of monochromatic light of wavelength `lambda` ejects photoelectronic from a cesium surface `(W_(0)=1.9 eV)` which are made to collide with hydrogen atoms in ground state. The maximum value of `lambda` for which hydrogen atoms may be ionised is

A beam of momechromatic light of wavelength lambda ejectes photonelectrons from a cesium (phi = 1.9eV) these photonelectron are mde to collide with h-atom in ground state . find the maximum value of lambda for which (a) hydrogen atoms may be ionised (b) hydrogen may get excited from the ground state to the first excited state and (c ) the excited hydrogen atoms may emit visible light

A beam of momechromatic light of wavelength lambda ejectes photonelectrons from a cesium (phi = 1.9eV) these photonelectron are mde to collide with h-atom in ground state . find the maximum value of lambda for which (a) hydrogen atoms may be ionised (b) hydrogen may get excited from the ground state to the first excited state and (c ) the excited hydrogen atoms may emit visible light

A beam of momechromatic light of wavelength lambda ejectes photonelectrons from a cesium (phi = 1.9eV) these photonelectron from a radius are made to ceslum with hydrogen atoms in ground state find the maximum value of lambda for which (a) hydrogen atoms may be ionised (b) hydrogen may get excited from the ground state to the first excited state and (c ) the excited hydrogen atoms may emit visible light

A 12.5 ev electron beam is used to bombard gaseous hydrogen at ground state. The energy level upto which the hydrogen atoms would be excited is

A monochromatic light soure of frequency f illuminates a metallic surface and ejects photoelectrons. The photoelectrons having maximum energy are just able to ionize the hydrogen atoms in ground state. When the whole experiment is repeated with an incident radiation of frequency (5)/(6) f , the photoelectrons so emitted are able to excite the hydrogen atom beam which then emits a radiation of wavelength 1215 Å . (a) What is the frequency of radiation? (b) Find the work- function of the metal.

A monochromatic light soure of frequency f illuminates a metallic surface and ejects photoelectrons. The photoelectrons having maximum energy are just able to ionize the hydrogen atoms in ground state. When the whole experiment is repeated with an incident radiation of frequency (5)/(6) f , the photoelectrons so emitted are able to excite the hydrogen atom beam which then emits a radiation of wavelength 1215 Å . (a) What is the frequency of radiation? (b) Find the work- function of the metal.

A monochromatic light of frequency is incident on a metal surface and ejects photoelectrons. The photoelectrons having maximum kinetic energy are just able to ionise a hypothetical atom in ground state. The energy levels of hypothetical one-electron atom' are given by E_(n)=-(29)/(n^(2)) eV , where n = 1,2,3.....When whole experiment is repeated with an incident light of frequency v//2 , the photoelectrons with maximum kinetic energy are just able to ionise hydrogen atom in ground state. Calculate the work function of the metal

A monochromatic beam of light is absorbed by a collector of ground state hydrogen atom in such a way that six different wavelengths are observed when hydrogen relaxes back to the ground state. The wavelength of the incident beam is