1eV=1.6×10^–19 J)
A beam of electromagnetic radiation of intensity 6.4 × 10^–5 W/cm^2 is comprised of wavelength, λ = 310 nm. It falls normally on a metal (work function φ = 2eV) of surface area of 1 cm^2. If one in 10^3 photons ejects an electron, total number of electrons ejected in 1 s is 10^x. (hc=1240 eVnm, 1eV=1.6×10^–19 J), then x is ___.
19
Sep
A beam of electromagnetic radiation of intensity 6.4 × 10^–5 W/cm^2 is comprised of wavelength, λ = 310 nm. It falls normally on a metal (work function φ = 2eV) of surface area of 1 cm^2. If one in 10^3 photons ejects an electron, total number of electrons ejected in 1 s is 10^x. (hc=1240 [...]
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1eV=1.6×10^–19 J) ,
A beam of electromagnetic radiation of intensity 6.4 × 10^–5 W/cm^2 is comprised of wavelength ,
then x is ___. ,
total number of electrons ejected in 1 s is 10^x. (hc=1240 eVnm ,
λ = 310 nm. It falls normally on a metal (work function φ = 2eV) of surface area of 1 cm^2. If one in 10^3 photons ejects an electron ,