The work function of metals is in the range of 2 eV to 5 eV. Find which of the following wavelength of light cannot be used for photoelectric effect. (Consider, Planck's constant 
and velocity of light 
)
Text Solution
Verified by ExpertsThe correct answer is:
B
Given, 
Wavelength corresponding to minimum and maximum values of work function are
and 
Clearly, wavelength range would be
Thus, wavelength 650 nm is not suitable for photoelectric effect.
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