Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Radiation of wavelength 200 Å falls on a platinum surface. If the work function of the metal is 5 eV. Which of the following results are correct about experiment ?
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(b,c,d)
According to emission photoelectric efect
h ν = h ν 0 + 
mV 2
E of incident radiation = 
= 
= 9.94 × 10 –18 J
ν 0 = 
= 1.2 × 10 15 sec –1
mv 2 = 9.94 × 10 –18 – 8 × 10 –19 = 9.14 × 10 –18
v = 
= 4.47 × 10 6 m/sec
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