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NEETChemistryStructure of Atom

The work function for caesium atom is 1.9 eV. If the caesium element is irradiated with a wavelength 500 nm, calculate (i) the kinetic energy and (ii) the velocity of the ejected photoelectron.

Options

  1. A(i)9.29 ×10 –20 J and (ii) 7.265 × 10 5 ms –1
  2. B(i)6.36 ×10 –20 J and (ii) 4.516 × 10 5 ms –1
  3. C(i)9.29 ×10 –20 J and (ii) 4.516 × 10 5 ms –1
  4. D(i)8.36 ×10 –20 J and (ii) 7.265 × 10 5 ms –1

Correct answer

C. (i)9.29 ×10 –20 J and (ii) 4.516 × 10 5 ms –1

Step-by-step solution

Correct Option is : (C) (i)9.29 ×10 –20 J and (ii) 4.516 × 10 5 ms –1

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