A light beam of wavelength 500 nm is incident on a metal having work function of 1.25 eV, placed in a magnetic field of intensity B. The electrons emitted perpendicular to the magnetic field B, with maximum kinetic energy, are bent into a circular arc of radius 30 cm. The value of B is ×10−7 T.Given hc=20×10−26 Jm, mass of electron me=9×10−31 kg

A light beam of wavelength 500 nm is incident on a metal having work f

1.	A light beam of wavelength 500 nm is incident on a metal having work function of 1.25 eV, placed in a magnetic field of intensity B. The electrons emitted perpendicular to the magnetic field B, with maximum kinetic energy, are bent into a circular arc of radius 30 cm. The value of B is ×10−7 T.Given hc=20×10−26 Jm, mass of electron me=9×10−31 kg
Answer» A light beam of wavelength $500 nm$ is incident on a metal having work function of $1.25 eV$ , placed in a magnetic field of intensity $B$ . The electrons emitted perpendicular to the magnetic field $B$ , with maximum kinetic energy, are bent into a circular arc of radius $30 cm$ . The value of $B$ is $\times 10^{- 7} T$ . Given $h c = 20 \times 10^{- 26} Jm$ , mass of electron $m_{e} = 9 \times 10^{- 31} kg$

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