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when uv light of wavelength 285 nm falls on a metal surface, the maximum kinetic energy of emitted electrons is 1.60 ev . what is the work function of the metal?

User Cateyes
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Final answer:

The maximum kinetic energy of the emitted photoelectrons can be found using the equation: K.E. = energy of the incident photon - work function. The work function of the metal can be found by rearranging the equation: work function = energy of the incident photon - maximum kinetic energy. By substituting the given values into the equations, the work function of the metal can be determined.

Step-by-step explanation:

The maximum kinetic energy of the emitted photoelectrons can be found using the equation:

K.E. = energy of incident photon - work function

In this case, the energy of the incident photon can be calculated using the formula:

E = hc/λ

where E is the energy, h is Planck's constant (6.626 x 10^-34 J·s), c is the speed of light (3.00 x 10^8 m/s), and λ is the wavelength of the UV light.

Once the energy of the incident photon is known, the work function of the metal can be found by rearranging the equation:

work function = energy of incident photon - maximum kinetic energy

Substituting the given values into the equations, we can find the work function of the metal.

User Assa
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